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Masayuki Koga

Section

Research Center for Neutrino Science

Job title

Associate Professor

Degree

博士（理学）（東北大学）
修士（理学）（新潟大学）

researchmap

https://researchmap.jp/read0191581

J-GLOBAL ID

200901011955843495

Research History 4

2004/10 - 2007/03

東北大学大学院理学研究科　助教授
2001/04 - 2004/09

東北大学大学院理学研究科　助手
1998/04 - 2001/03

日本学術振興会特別研究員　特別研究員（ＣＯＥ）
2007/04 -

東北大学大学院理学研究科　准教授

Committee Memberships 2

日本物理学会　領域運営委員

2014/04 - 2015/03
日本物理学会　領域運営委員

2014/04 - 2015/03

Professional Memberships 1

日本物理学会

Research Interests 2

double beta decay
neutrino

Research Areas 1

Natural sciences / Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics /

Papers 58

Combined Pre-supernova Alert System with KamLAND and Super-Kamiokande Peer-reviewed

S. Abe, M. Eizuka, S. Futagi, A. Gando, Y. Gando, S. Goto, T. Hachiya, K. Hata, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, M. Koga, M. Kurasawa, T. Mitsui, H. Miyake, D. Morita, T. Nakahata, R. Nakajima, K. Nakamura, R. Nakamura, R. Nakamura, J. Nakane, H. Ozaki, K. Saito, T. Sakai, I. Shimizu, J. Shirai, K. Shiraishi, R. Shoji, A. Suzuki, A. Takeuchi, K. Tamae, H. Watanabe, K. Watanabe, S. Yoshida, S. Umehara, K. Fushimi, K. Kotera, Y. Urano, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, Z. Fu, J. Smolsky, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, S. Dell’Oro, T. O’Donnell, J. A. Detwiler, S. Enomoto, M. P. Decowski, K. M. Weerman, C. Grant, H. Song, A. Li, S. N. Axani, M. Garcia, K. Abe, S. Abe, C. Bronner, Y. Hayato, K. Hiraide, K. Hosokawa, K. Ieki, M. Ikeda, J. Kameda, Y. Kanemura, R. Kaneshima, Y. Kashiwagi, Y. Kataoka, S. Miki, S. Mine, M. Miura, S. Moriyama, M. Nakahata, Y. Nakano, S. Nakayama, Y. Noguchi, K. Sato, H. Sekiya, H. Shiba, K. Shimizu, M. Shiozawa, Y. Sonoda, Y. Suzuki, A. Takeda, Y. Takemoto, H. Tanaka, T. Yano, S. Han, T. Kajita, K. Okumura, T. Tashiro, T. Tomiya, X. Wang, S. Yoshida, P. Fernandez, L. Labarga, N. Ospina, B. Zaldivar, B. W. Pointon, E. Kearns, J. L. Raaf, L. Wan, T. Wester, J. Bian, N. J. Griskevich, M. B. Smy, H. W. Sobel, V. Takhistov, A. Yankelevich, J. Hill, M. C. Jang, S. H. Lee, D. H. Moon, R. G. Park, B. Bodur, K. Scholberg, C. W. Walter, A. Beauchêne, O. Drapier, A. Giampaolo, Th. A. Mueller, A. D. Santos, P. Paganini, B. Quilain, R. Rogly, T. Nakamura, J. S. Jang, L. N. Machado, J. G. Learned, K. Choi, N. Iovine, S. Cao, L. H. V. Anthony, D. Martin, N. W. Prouse, M. Scott, Y. Uchida, V. Berardi, N. F. Calabria, M. G. Catanesi, E. Radicioni, A. Langella, G. De Rosa, G. Collazuol, M. Feltre, F. Iacob, M. Mattiazzi, L. Ludovici, M. Gonin, L. Périssé, G. Pronost, C. Fujisawa, S. Horiuchi, M. Kobayashi, Y. M. Liu, Y. Maekawa, Y. Nishimura, R. Okazaki, R. Akutsu, M. Friend, T. Hasegawa, T. Ishida, T. Kobayashi, M. Jakkapu, T. Matsubara, T. Nakadaira, K. Nakamura, Y. Oyama, K. Sakashita, T. Sekiguchi, T. Tsukamoto, A. Portocarrero Yrey, N. Bhuiyan, G. T. Burton, F. Di Lodovico, J. Gao, A. Goldsack, T. Katori, J. Migenda, R. M. Ramsden, Z. Xie, S. Zsoldos, A. T. Suzuki, Y. Takagi, Y. Takeuchi, H. Zhong, J. Feng, L. Feng, J. R. Hu, Z. Hu, M. Kawaue, T. Kikawa, M. Mori, T. Nakaya, R. A. Wendell, K. Yasutome, S. J. Jenkins, N. McCauley, P. Mehta, A. Tarrant, M. J. Wilking, Y. Fukuda, Y. Itow, H. Menjo, K. Ninomiya, Y. Yoshioka, J. Lagoda, M. Mandal, P. Mijakowski, Y. S. Prabhu, J. Zalipska, M. Jia, J. Jiang, W. Shi, C. Yanagisawa, M. Harada, Y. Hino, H. Ishino, Y. Koshio, F. Nakanishi, S. Sakai, T. Tada, T. Tano, T. Ishizuka, G. Barr, D. Barrow, L. Cook, S. Samani, D. Wark, A. Holin, F. Nova, S. Jung, B. S. Yang, J. Y. Yang, J. Yoo, J. E. P. Fannon, L. Kneale, M. Malek, J. M. McElwee, M. D. Thiesse, L. F. Thompson, S. T. Wilson, H. Okazawa, S. M. Lakshmi, S. B. Kim, E. Kwon, J. W. Seo, I. Yu, A. K. Ichikawa, K. D. Nakamura, S. Tairafune, K. Nishijima, A. Eguchi, K. Nakagiri, Y. Nakajima, S. Shima, N. Taniuchi, E. Watanabe, M. Yokoyama, P. de Perio, S. Fujita, C. Jesús-Valls, K. Martens, K. M. Tsui, M. R. Vagins, J. Xia, S. Izumiyama, M. Kuze, R. Matsumoto, K. Terada, R. Asaka, M. Ishitsuka, H. Ito, Y. Ommura, N. Shigeta, M. Shinoki, K. Yamauchi, T. Yoshida, R. Gaur, V. Gousy-Leblanc, M. Hartz, A. Konaka, X. Li, S. Chen, B. D. Xu, A. Q. Zhang, B. Zhang, M. Posiadala-Zezula, S. B. Boyd, R. Edwards, D. Hadley, M. Nicholson, M. O’Flaherty, B. Richards, A. Ali, B. Jamieson, S. Amanai, Ll. Marti, A. Minamino, R. Shibayama, S. Suzuki

The Astrophysical Journal　973　(2)　140-140　2024/09/26
Publisher: American Astronomical Society
DOI： 10.3847/1538-4357/ad5fee 　

ISSN： 0004-637X

eISSN： 1538-4357

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Abstract Preceding a core-collapse supernova (CCSN), various processes produce an increasing amount of neutrinos of all flavors characterized by mounting energies from the interior of massive stars. Among them, the electron antineutrinos are potentially detectable by terrestrial neutrino experiments such as KamLAND and Super-Kamiokande (SK) via inverse beta decay interactions. Once these pre-supernova (pre-SN) neutrinos are observed, an early warning of the upcoming CCSN can be provided. In light of this, KamLAND and SK, both located in the Kamioka mine in Japan, have been monitoring pre-SN neutrinos since 2015 and 2021, respectively. Recently, we performed a joint study between KamLAND and SK on pre-SN neutrino detection. A pre-SN alert system combining the KamLAND detector and the SK detector was developed and put into operation, which can provide a supernova alert to the astrophysics community. Fully leveraging the complementary properties of these two detectors, the combined alert is expected to resolve a pre-SN neutrino signal from a 15 M _⊙ star within 510 pc of the Earth at a significance level corresponding to a false alarm rate of no more than 1 per century. For a Betelgeuse-like model with optimistic parameters, it can provide early warnings up to 12 hr in advance.
Search for charged excited states of dark matter with KamLAND-Zen Peer-reviewed

S. Abe, M. Eizuka, S. Futagi, A. Gando, Y. Gando, S. Goto, T. Hachiya, K. Hata, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, M. Koga, M. Kurasawa, T. Mitsui, H. Miyake, D. Morita, T. Nakahata, R. Nakajima, K. Nakamura, R. Nakamura, R. Nakamura, J. Nakane, H. Ozaki, T. Sakai, I. Shimizu, J. Shirai, K. Shiraishi, R. Shoji, A. Suzuki, A. Takeuchi, K. Tamae, H. Watanabe, K. Watanabe, S. Obara, S. Yoshida, S. Umehara, K. Fushimi, K. Kotera, Y. Urano, A. Ichikawa, B.E. Berger, B.K. Fujikawa, J.G. Learned, J. Maricic, S.N. Axani, Z. Fu, J. Smolsky, L.A. Winslow, Y. Efremenko, H.J. Karwowski, D.M. Markoff, W. Tornow, S. Dell'Oro, T. O'Donnell, J.A. Detwiler, S. Enomoto, M.P. Decowski, K.M. Weerman, C. Grant, A. Li, H. Song

Physics Letters B　855　138846-138846　2024/08
Publisher: Elsevier BV
DOI： 10.1016/j.physletb.2024.138846 　

ISSN： 0370-2693
Measurement of cosmic-ray muon spallation products in a xenon-loaded liquid scintillator with KamLAND

S. Abe, S. Asami, M. Eizuka, S. Futagi, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, M. Koga, M. Kurasawa, T. Mitsui, H. Miyake, T. Nakahata, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, I. Shimizu, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, H. Watanabe, Y. Yoshida, S. Obara, A. K. Ichikawa, S. Yoshida, S. Umehara, K. Fushimi, K. Kotera, Y. Urano, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, Z. Fu, J. Smolsky, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, S. Dell'Oro, T. O'Donnell, J. A. Detwiler, S. Enomoto, M. P. Decowski, K. M. Weerman, C. Grant, A. Li, H. Song

Physical Review C　107　(5)　2023/05/22
Publisher: American Physical Society (APS)
DOI： 10.1103/physrevc.107.054612 　

ISSN： 2469-9985

eISSN： 2469-9993
First measurement of the strange axial coupling constant using neutral-current quasielastic interactions of atmospheric neutrinos at KamLAND

S. Abe, S. Asami, M. Eizuka, S. Futagi, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, M. Koga, M. Kurasawa, T. Mitsui, H. Miyake, T. Nakahata, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, I. Shimizu, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, H. Watanabe, Y. Yoshida, S. Obara, A. K. Ichikawa, S. Yoshida, S. Umehara, K. Fushimi, K. Kotera, Y. Urano, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, Z. Fu, J. Smolsky, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, M. P. Decowski, C. Grant, A. Li, H. Song, S. Dell’Oro, T. O’Donnell

Physical Review D　107　(7)　2023/04/19
Publisher: American Physical Society (APS)
DOI： 10.1103/physrevd.107.072006 　

ISSN： 2470-0010

eISSN： 2470-0029
Search for the Majorana Nature of Neutrinos in the Inverted Mass Ordering Region with KamLAND-Zen Peer-reviewed

S. Abe, S. Asami, M. Eizuka, S. Futagi, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, S. Hayashida, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, M. Koga, M. Kurasawa, N. Maemura, T. Mitsui, H. Miyake, T. Nakahata, K. Nakamura, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, H. Sambonsugi, I. Shimizu, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, K. Ueshima, H. Watanabe, Y. Yoshida, S. Obara, A. K. Ichikawa, D. Chernyak, A. Kozlov, K. Z. Nakamura, S. Yoshida, Y. Takemoto, S. Umehara, K. Fushimi, K. Kotera, Y. Urano, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, J. Smolsky, Z. Fu, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, S. Dell’Oro, T. O’Donnell, J. A. Detwiler, S. Enomoto, M. P. Decowski, C. Grant, A. Li, H. Song

Physical Review Letters　130　(5)　2023/01/30
Publisher: American Physical Society (APS)
DOI： 10.1103/physrevlett.130.051801 　

ISSN： 0031-9007

eISSN： 1079-7114
KamLAND’s search for correlated low-energy electron antineutrinos with astrophysical neutrinos from IceCube

S. Abe, S. Asami, M. Eizuka, S. Futagi, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, T. Kinoshita, M. Koga, M. Kurasawa, N. Maemura, T. Mitsui, H. Miyake, T. Nakahata, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, H. Sambonsugi, I. Shimizu, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, H. Watanabe, Y. Yoshida, S. Obara, A.K. Ichikawa, S. Yoshida, S. Umehara, K. Fushimi, K. Kotera, Y. Urano, B.E. Berger, B.K. Fujikawa, J.G. Learned, J. Maricic, S.N. Axani, J. Smolsky, J. Lertprasertpong, L.A. Winslow, Z. Fu, J. Ouellet, Y. Efremenko, H.J. Karwowski, D.M. Markoff, W. Tornow, A. Li, J.A. Detwiler, S. Enomoto, M.P. Decowski, C. Grant, H. Song, T. O’Donnell, S. Dell’Oro

Astroparticle Physics　143　102758-102758　2022/10
Publisher: Elsevier BV
DOI： 10.1016/j.astropartphys.2022.102758 　

ISSN： 0927-6505
Abundances of uranium and thorium elements in Earth estimated by geoneutrino spectroscopy Peer-reviewed

S. Abe, S. Asami, M. Eizuka, S. Futagi, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, M. Koga, M. Kurasawa, N. Maemura, T. Mitsui, H. Miyake, T. Nakahata, K. Nakamura, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, H. Sambonsugi, I. Shimizu, Y. Shirahata, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, H. Watanabe, Y. Yoshida, S. Obara, A. K. Ichikawa, S. Yoshida, S. Umehara, K. Fushimi, K. Kotera, Y. Urano, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, Z. Fu, J. Smolsky, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, A. Li, J. A. Detwiler, S. Enomoto, M. P. Decowski, C. Grant, H. Song, T. O’Donnell, S. Dell’Oro

Geophysical Research Letters　49　(16)　2022/08/11
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2022gl099566 　

ISSN： 0094-8276

eISSN： 1944-8007

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Abstract The decay of the primordial isotopes ²³⁸U, ²³⁵U, ²³²Th, and ⁴⁰K has contributed to the terrestrial heat budget throughout the Earth's history. Hence, the individual abundance of those isotopes are key parameters in reconstructing contemporary Earth models. The geoneutrinos produced by the radioactive decays of uranium and thorium have been observed with the Kamioka Liquid‐Scintillator Antineutrino Detector (KamLAND). Those measurements have been improved with more than 18‐year observation time, and improvement in detector background levels mainly with an 8‐year nearly reactor‐free period, which now permit spectroscopy with geoneutrinos. Our results yield the first constraint on both uranium and thorium heat contributions. The KamLAND result is consistent with geochemical estimations based on elemental abundances of chondritic meteorites and mantle peridotites. The High‐Q model is disfavored at 99.76% C.L. and a fully radiogenic model is excluded at 5.2σ assuming a homogeneous heat producing element distribution in the mantle.
Search for Supernova Neutrinos and Constraint on the Galactic Star Formation Rate with the KamLAND Data

S. Abe, S. Asami, M. Eizuka, S. Futagi, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, M. Koga, M. Kurasawa, N. Maemura, T. Mitsui, H. Miyake, T. Nakahata, K. Nakamura, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, H. Sambonsugi, I. Shimizu, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, H. Watanabe, Y. Yoshida, S. Obara, A. Ichikawa, S. Yoshida, S. Umehara, K. Fushimi, K. Kotera, Y. Urano, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, L. A. Winslow, Z. Fu, J. Smolsky, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, A. Li, J. A. Detwiler, S. Enomoto, M. P. Decowski, C. Grant, H. Song, T. O’Donnell, S. Dell’Oro

The Astrophysical Journal　934　(1)　85-85　2022/07/01
Publisher: American Astronomical Society
DOI： 10.3847/1538-4357/ac7a3f 　

ISSN： 0004-637X

eISSN： 1538-4357

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Abstract We present the results of a search for core-collapse supernova neutrinos, using long-term KamLAND data from 2002 March 9 to 2020 April 25. We focus on the electron antineutrinos emitted from supernovae in the energy range of 1.8–111 MeV. Supernovae will make a neutrino event cluster with the duration of ∼10 s in the KamLAND data. We find no neutrino clusters and give the upper limit on the supernova rate to be 0.15 yr⁻¹ with a 90% confidence level. The detectable range, which corresponds to a >95% detection probability, is 40–59 kpc and 65–81 kpc for core-collapse supernovae and failed core-collapse supernovae, respectively. This paper proposes to convert the supernova rate obtained by the neutrino observation to the Galactic star formation rate. Assuming a modified Salpeter-type initial mass function, the upper limit on the Galactic star formation rate is <(17.5–22.7) M_⊙ yr⁻¹ with a 90% confidence level.
A Search for Correlated Low-energy Electron Antineutrinos in KamLAND with Gamma-Ray Bursts

S. Abe, S. Asami, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, T. Kinoshita, M. Koga, N. Maemura, T. Mitsui, H. Miyake, K. Nakamura, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, H. Sambonsugi, I. Shimizu, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, M. Eizuka, M. Kurasawa, T. Nakahata, S. Futagi, H. Watanabe, Y. Yoshida, S. Obara, A. K. Ichikawa, S. Yoshida, S. Umehara, K. Fushimi, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, J. Smolsky, C. Laber-Smith, L. A. Winslow, Z. Fu, J. Ouellet, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, A. Li, J. A. Detwiler, S. Enomoto, M. P. Decowski, C. Grant, H. Song, T. O'Donnell, S. Dell'Oro

Astrophysical Journal　927　(1)　2022/03/01

DOI： 10.3847/1538-4357/ac4e7e 　

ISSN： 0004-637X

eISSN： 1538-4357
Limits on Astrophysical Antineutrinos with the KamLAND Experiment

S. Abe, S. Asami, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, S. Hayashida, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, T. Kinoshita, M. Koga, N. Maemura, T. Mitsui, H. Miyake, K. Nakamura, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, H. Sambonsugi, I. Shimizu, Y. Shirahata, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, K. Ueshima, Y. Wada, H. Watanabe, Y. Yoshida, S. Obara, A. K. Ichikawa, A. Kozlov, D. Chernyak, Y. Takemoto, S. Yoshida, S. Umehara, K. Fushimi, S. Hirata, K. Z. Nakamura, M. Yoshida, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, L. A. Winslow, Z. Fu, J. Ouellet, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, A. Li, J. A. Detwiler, S. Enomoto, M. P. Decowski, C. Grant, T. O'Donnell, S. Dell'Oro

Astrophysical Journal　925　(1)　2022/01/20

DOI： 10.3847/1538-4357/ac32c1 　

ISSN： 0004-637X

eISSN： 1538-4357
Search for Solar Flare Neutrinos with the KamLAND Detector

Kamland Collaboration, S. Abe, S. Asami, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, S. Hayashida, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, T. Kinoshita, M. Koga, N. Maemura, T. Mitsui, H. Miyake, K. Nakamura, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, H. Sambonsugi, I. Shimizu, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, K. Ueshima, Y. Wada, H. Watanabe, Y. Yoshida, S. Obara, A. K. Ichikawa, A. Kozlov, D. Chernyak, Y. Takemoto, S. Yoshida, S. Umehara, K. Fushimi, K. Z. Nakamura, M. Yoshida, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, L. A. Winslow, Z. Fu, J. Ouellet, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, A. Li, J. A. Detwiler, S. Enomoto, M. P. Decowski, C. Grant, T. O'Donnell, S. Dell'Oro

Astrophysical Journal　924　(2)　2022/01/10

DOI： 10.3847/1538-4357/ac35d1 　

ISSN： 0004-637X

eISSN： 1538-4357
PICOLON dark matter search project Peer-reviewed

K. Fushimi, D. Chernyak, H. Ejiri, K. Hata, R. Hazama, T. Iida, H. Ikeda, K. Imagawa, K. Inoue, H. Ishiura, H. Ito, T. Kishimoto, M. Koga, K. Kotera, A. Kozlov, K. Nakamura, R. Orito, T. Shima, Y. Takemoto, S. Umehara, Y. Urano, Y. Yamamoto, K. Yasuda, S. Yoshida

Journal of Physics: Conference Series　2156　(1)　012045-012045　2021/12/01
Publisher: IOP Publishing
DOI： 10.1088/1742-6596/2156/1/012045 　

ISSN： 1742-6588

eISSN： 1742-6596
Low-energy astrophysics with KamLAND

Nanami Kawada, Shuhei Obara, Koji Ishidoshiro, Seisho Abe, Sachihiro Asami, Azusa Gando, Yoshihito Gando, Tomomi Gima, Anna Goto, Takahiko Hachiya, Kazumi Hata, Shingo Hayashida, Keishi Hosokawa, Koichi Ichimura, Sei Ieki, Haruo Ikeda, Kunio Inoue, Yuto Kamei, Yasuhiro Kishimoto, Tatsuya Kinoshita, Masayuki Koga, Naoya Maemura, Tadao Mitsui, Haruhiko Miyake, Kengo Nakamura, Kosuke Nakamura, Rikuo Nakamura, Hideyoshi Ozaki, Taichi Sakai, Hiroto Sambonsugi, Itaru Shimizu, Junpei Shirai, Kensuke Shiraishi, Atsuto SUZUKI, Yuya Suzuki, Atsuto Takeuchi, Kyoko Tamae, Kota Ueshima, Yoshiki Wada, Hiroko Watanabe, Yuki Yoshida, Atsuko Ichikawa, Alexandre Kozlov, Dmitry CHERNYAK, Yasuhiro Takemoto, Sei Yoshida, Saori Umehara, Ken-Ichi Fushimi, Kazuhiro Nakamura, Masashi Yoshida, Bruce Edmond Berger, Brian Kurt Fujikawa, John Gregory Learned, Jelena Maricic, Spencer N. Axani, Lindley Anne Winslow, Zhenghao Fu, Jonathan Ouellet, Yuri Efremenko, Hugon J. Karwowski, Dian M. Markoff, Werner Tornow, Aobo Li, Jason A. Detwiler, Sanshiro Enomoto, Patric Decowski, Chistopher Grant, Thomas O'Donnell, Stefano Dell'Oro

Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021)　2021/07/29
Publisher: Sissa Medialab
DOI： 10.22323/1.395.1163 　
Development of highly radiopure NaI(Tl) scintillator for PICOLON dark matter search project Peer-reviewed

K Fushimi, Y Kanemitsu, S Hirata, D Chernyak, R Hazama, H Ikeda, K Imagawa, H Ishiura, H Ito, T Kisimoto, A Kozlov, Y Takemoto, K Yasuda, H Ejiri, K Hata, T Iida, K Inoue, M Koga, K Nakamura, R Orito, T Shima, S Umehara, S Yoshida

Progress of Theoretical and Experimental Physics　2021　(4)　2021/04/19
Publisher: Oxford University Press (OUP)
DOI： 10.1093/ptep/ptab020 　

eISSN： 2050-3911

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<title>Abstract</title> Highly radiopure NaI(Tl) was developed to search for particle candidates of dark matter. Optimized methods were combined to reduce various radioactive impurities. $^{40}$K was effectively reduced by the recrystallization method. The progenies of the decay chains of uranium and thorium were reduced by appropriate resins. The concentration of natural potassium in NaI(Tl) crystal was reduced to 20 ppb. Concentrations of alpha-ray emitters were successfully reduced by appropriate resin selection. The present concentrations of the thorium series and $^{226}$Ra were $1.2\pm1.4$$\mu$Bq/kg and $13\pm4$$\mu$Bq/kg, respectively. No significant excess in the concentration of $^{210}$Pb was obtained, and the upper limit was 5.7 $\mu$Bq/kg at 90$\#$ CL. The achieved level of radiopurity of NaI(Tl) crystals makes the construction of a dark matter detector possible.
Search for Low-energy Electron Antineutrinos in KamLAND Associated with Gravitational Wave Events

S. Abe, S. Asami, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, S. Hayashida, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, T. Kinoshita, M. Koga, N. Maemura, T. Mitsui, H. Miyake, K. Nakamura, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, H. Sambonsugi, I. Shimizu, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, K. Ueshima, Y. Wada, H. Watanabe, Y. Yoshida, S. Obara, A. Kozlov, D. Chernyak, Y. Takemoto, S. Yoshida, S. Umehara, K. Fushimi, A. K. Ichikawa, K. Z. Nakamura, M. Yoshida, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, L. A. Winslow, Z. Fu, J. Ouellet, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, A. Li, J. A. Detwiler, S. Enomoto, M. P. Decowski, C. Grant, T. O’Donnell, S. Dell’Oro

The Astrophysical Journal　909　(2)　116-116　2021/03/01
Publisher: American Astronomical Society
DOI： 10.3847/1538-4357/abd5bc 　

ISSN： 0004-637X

eISSN： 1538-4357
Precision Analysis of the Xe 136 Two-Neutrino ββ Spectrum in KamLAND-Zen and Its Impact on the Quenching of Nuclear Matrix Elements Peer-reviewed

A. Gando, Y. Gando, T. Hachiya, M. Ha Minh, S. Hayashida, Y. Honda, K. Hosokawa, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, K. Kamizawa, T. Kinoshita, M. Koga, S. Matsuda, T. Mitsui, K. Nakamura, A. Ono, N. Ota, S. Otsuka, H. Ozaki, Y. Shibukawa, I. Shimizu, Y. Shirahata, J. Shirai, T. Sato, K. Soma, A. Suzuki, A. Takeuchi, K. Tamae, K. Ueshima, H. Watanabe, D. Chernyak, A. Kozlov, S. Obara, S. Yoshida, Y. Takemoto, S. Umehara, K. Fushimi, S. Hirata, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, T. O'Donnell, J. A. Detwiler, S. Enomoto, M. P. Decowski, J. Menéndez, R. Dvornický, F. Šimkovic

Physical Review Letters　122　(19)　192501-192501-7　2019/05/13

DOI： 10.1103/PhysRevLett.122.192501 　

ISSN： 0031-9007

eISSN： 1079-7114
Physics potentials with the second Hyper-Kamiokande detector in Korea Peer-reviewed

The Hyper-Kamiokande, Proto-Collaboration, K Abe

Progress of Theoretical and Experimental Physics　2018　063C01　2018/06
Kamland-zen

S. Abe, A. Gando, Y. Gando, T. Hachiya, S. Hayashida, K. Hosokawa, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, T. Kinoshita, M. Koga, T. Mitsui, H. Miyake, K. Nakamura, S. Obara, A. Ohno, N. Ohta, S. Ohtsuka, H. Ozaki, T. Sato, I. Shimizu, Y. Shirahata, J. Shirai, A. Suzuki, A. Takeuchi, K. Tamae, K. Ueshima, Y. Wada, H. Watanabe, A. Kozlov, D. Chernyak, Y. Takemoto, S. Umehara, S. Yoshida, K. Fushimi, S. Hirata, B. E. Berger, B. K. Fujikawa, L. A. Winslow, J. Ouellet, E. Krupczak, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, T. O’Donnell, J. A. Detwiler, S. Enomoto, M. P. Decowski

Neutrino 2018 - 28th International Conference on Neutrino Physics and Astrophysics, Conference Proceedings　2018
A Search for Electron Antineutrinos Associated with Gravitational-wave Events GW150914 and GW151226 Using KamLAND (vol 829, L34, 2016) Peer-reviewed

A. Gando, Y. Gando, T. Hachiya, A. Hayashi, S. Hayashida, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Karino, M. Koga, S. Matsuda, T. Mitsui, K. Nakamura, S. Obara, T. Oura, H. Ozaki, I. Shimizu, Y. Shirahata, J. Shirai, A. Suzuki, T. Takai, K. Tamae, Y. Teraoka, K. Ueshima, H. Watanabe, A. Kozlov, Y. Takemoto, S. Yoshida, K. Fushimi, A. Piepke, T. I. Banks, B. E. Berger, B. K. Fujikawa, T. O'Donnell, J. G. Learned, J. Maricic, M. Sakai, L. A. Winslow, E. Krupczak, J. Ouellet, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, M. P. Decowski

ASTROPHYSICAL JOURNAL LETTERS　851　(1)　1-5　2017/12

DOI： 10.3847/2041-8213/aa9a32 　

ISSN： 2041-8205

eISSN： 2041-8213
Search for Majorana Neutrinos Near the Inverted Mass Hierarchy Region with KamLAND-Zen Peer-reviewed

A. Gando, Y. Gando, T. Hachiya, A. Hayashi, S. Hayashida, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Karino, M. Koga, S. Matsuda, T. Mitsui, K. Nakamura, S. Obara, T. Oura, H. Ozaki, I. Shimizu, Y. Shirahata, J. Shirai, A. Suzuki, T. Takai, K. Tamae, Y. Teraoka, K. Ueshima, H. Watanabe, A. Kozlov, Y. Takemoto, S. Yoshida, K. Fushimi, T. I. Banks, B. E. Berger, B. K. Fujikawa, T. O'Donnell, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, M. P. Decowski

PHYSICAL REVIEW LETTERS　117　(8)　082503-1-082503-6　2016/08

DOI： 10.1103/PhysRevLett.117.082503 　

ISSN： 0031-9007

eISSN： 1079-7114
Search for double-beta decay of Xe-136 to excited states of Ba-136 with the KamLAND-Zen experiment Peer-reviewed

K. Asakura, A. Gando, Y. Gando, T. Hachiya, S. Hayashida, H. Ikeda, K. Inoue, K. Ishidoshiro, T. Ishikawa, S. Ishio, M. Koga, S. Matsuda, T. Mitsui, D. Motoki, K. Nakamura, S. Obara, M. Otani, T. Oura, I. Shimizu, Y. Shirahata, J. Shirai, A. Suzuki, H. Tachibana, K. Tamae, K. Ueshima, H. Watanabe, B. D. Xu, H. Yoshida, A. Kozlov, Y. Takemoto, S. Yoshida, K. Fushimi, T. I. Banks, B. E. Berger, B. K. Fujikawa, T. O'Donnell, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, M. P. Decowski

NUCLEAR PHYSICS A　946　171-181　2016/02

DOI： 10.1016/j.nuclphysa.2015.11.011 　

ISSN： 0375-9474

eISSN： 1873-1554
KamLAND SENSITIVITY TO NEUTRINOS FROM PRE-SUPERNOVA STARS Peer-reviewed

K. Asakura, A. Gando, Y. Gando, T. Hachiya, S. Hayashida, H. Ikeda, K. Inoue, K. Ishidoshiro, T. Ishikawa, S. Ishio, M. Koga, S. Matsuda, T. Mitsui, D. Motoki, K. Nakamura, S. Obara, T. Oura, I. Shimizu, Y. Shirahata, J. Shirai, A. Suzuki, H. Tachibana, K. Tamae, K. Ueshima, H. Watanabe, B. D. Xu, A. Kozlov, Y. Takemoto, S. Yoshida, K. Fushimi, A. Piepke, T. I. Banks, B. E. Berger, B. K. Fujikawa, T. O'Donnell, J. G. Learned, J. Maricic, S. Matsuno, M. Sakai, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, M. P. Decowski

ASTROPHYSICAL JOURNAL　818　(1)　1-8　2016/02

DOI： 10.3847/0004-637X/818/1/91 　

ISSN： 0004-637X

eISSN： 1538-4357
A SEARCH for ELECTRON ANTINEUTRINOS ASSOCIATED with GRAVITATIONAL-WAVE EVENTS GW150914 and GW151226 USING KAMLAND Peer-reviewed

Gando A, Gando Y, Hachiya T, Hayashi A, Hayashida S, Ikeda H, Inoue K, Ishidoshiro K, Karino Y, Koga M, Matsuda S, Mitsui T, Nakamura K, Obara S, Oura T, Ozaki H, Shimizu I, Shirahata Y, Shirai J, Suzuki A, Takai T, Tamae K, Teraoka Y, Ueshima K, Watanabe H, Kozlov A, Takemoto Y, Yoshida S, Fushimi K, Piepke A, Banks T.I, Berger B.E, Fujikawa B.K, O{'}Donnell T, Learned J.G, Maricic J, Sakai M, Winslow L.A, Krupczak E, Ouellet J, Efremenko Y, Karwowski H.J, Markoff D.M, Tornow W, Detwiler J.A, Enomoto S, Decowski M.P

Astrophysical Journal Letters　829　(2)　2016

DOI： 10.3847/2041-8205/829/2/L34 　
Be-7 solar neutrino measurement with KamLAND Peer-reviewed

A. Gando, Y. Gando, H. Hanakago, H. Ikeda, K. Inoue, K. Ishidoshiro, H. Ishikawa, Y. Kishimoto, M. Koga, R. Matsuda, S. Matsuda, T. Mitsui, D. Motoki, K. Nakajima, K. Nakamura, A. Obata, A. Oki, Y. Oki, M. Otani, I. Shimizu, J. Shirai, A. Suzuki, K. Tamae, K. Ueshima, H. Watanabe, B. D. Xu, S. Yamada, Y. Yamauchi, H. Yoshida, A. Kozlov, Y. Takemoto, S. Yoshida, C. Grant, G. Keefer, D. W. McKee, A. Piepke, T. I. Banks, T. Bloxham, S. J. Freedman, B. K. Fujikawa, K. Han, L. Hsu, K. Ichimura, H. Murayama, T. O'Donnell, H. M. Steiner, L. A. Winslow, D. Dwyer, C. Mauger, R. D. McKeown, C. Zhang, B. E. Berger, C. E. Lane, J. Maricic, T. Miletic, J. G. Learned, M. Sakai, G. A. Horton-Smith, A. Tang, K. E. Downum, K. Tolich, Y. Efremenko, Y. Kamyshkov, O. Perevozchikov, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, K. Heeger, M. P. Decowski

PHYSICAL REVIEW C　92　(5)　055808-055808-8　2015/11

DOI： 10.1103/PhysRevC.92.055808 　

ISSN： 0556-2813

eISSN： 1089-490X
Search for the proton decay mode p → ν ¯ K+ with KamLAND SEARCH for the PROTON DECAY MODE ⋯ K. ASAKURA et al

K. Asakura, A. Gando, Y. Gando, T. Hachiya, S. Hayashida, H. Ikeda, K. Inoue, K. Inoue, K. Ishidoshiro, T. Ishikawa, S. Ishio, M. Koga, M. Koga, R. Matsuda, S. Matsuda, T. Mitsui, D. Motoki, K. Nakamura, K. Nakamura, S. Obara, Y. Oki, T. Oura, I. Shimizu, Y. Shirahata, J. Shirai, A. Suzuki, H. Tachibana, K. Tamae, K. Ueshima, H. Watanabe, B. D. Xu, Y. Yamauchi, H. Yoshida, A. Kozlov, Y. Takemoto, S. Yoshida, K. Fushimi, C. Grant, A. Piepke, A. Piepke, T. I. Banks, B. E. Berger, B. E. Berger, S. J. Freedman, B. K. Fujikawa, B. K. Fujikawa, T. O'Donnell, T. O'Donnell, J. G. Learned, J. Maricic, M. Sakai, S. Dazeley, R. Svoboda, L. A. Winslow, Y. Efremenko, Y. Efremenko, H. J. Karwowski, H. J. Karwowski, H. J. Karwowski, H. J. Karwowski, D. M. Markoff, W. Tornow, W. Tornow, J. A. Detwiler, S. Enomoto, S. Enomoto, M. P. Decowski, M. P. Decowski

Physical Review D - Particles, Fields, Gravitation and Cosmology　92　2015/09/23

DOI： 10.1103/PhysRevD.92.052006 　

ISSN： 1550-7998
Search for the proton decay mode p -> (v)over-barK(+) with KamLAND Peer-reviewed

K. Asakura, A. Gando, Y. Gando, T. Hachiya, S. Hayashida, H. Ikeda, K. Inoue, K. Ishidoshiro, T. Ishikawa, S. Ishio, M. Koga, R. Matsuda, S. Matsuda, T. Mitsui, D. Motoki, K. Nakamura, S. Obara, Y. Oki, T. Oura, I. Shimizu, Y. Shirahata, J. Shirai, A. Suzuki, H. Tachibana, K. Tamae, K. Ueshima, H. Watanabe, B. D. Xu, Y. Yamauchi, H. Yoshida, A. Kozlov, Y. Takemoto, S. Yoshida, K. Fushimi, C. Grant, A. Piepke, T. I. Banks, B. E. Berger, S. J. Freedman, B. K. Fujikawa, T. O'Donnell, J. G. Learned, J. Maricic, M. Sakai, S. Dazeley, R. Svoboda, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, M. P. Decowski

PHYSICAL REVIEW D　92　(5)　052006-1-052006-10　2015/09

DOI： 10.1103/PhysRevD.92.052006 　

ISSN： 2470-0010

eISSN： 2470-0029
STUDY OF ELECTRON ANTI-NEUTRINOS ASSOCIATED WITH GAMMA-RAY BURSTS USING KamLAND Peer-reviewed

K. Asakura, A. Gando, Y. Gando, T. Hachiya, S. Hayashida, H. Ikeda, K. Inoue, K. Ishidoshiro, T. Ishikawa, S. Ishio, M. Koga, S. Matsuda, T. Mitsui, D. Motoki, K. Nakamura, S. Obara, Y. Oki, T. Oura, I. Shimizu, Y. Shirahata, J. Shirai, A. Suzuki, H. Tachibana, K. Tamae, K. Ueshima, H. Watanabe, B. D. Xu, H. Yoshida, A. Kozlov, Y. Takemoto, S. Yoshida, K. Fushimi, A. Piepke, T. I. Banks, B. E. Berger, B. K. Fujikawa, T. O'Donnell, J. G. Learned, J. Maricic, M. Sakai, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, M. P. Decowski

ASTROPHYSICAL JOURNAL　806　(1)　87-1-87-5　2015/06

DOI： 10.1088/0004-637X/806/1/87 　

ISSN： 0004-637X

eISSN： 1538-4357
Physics potential of a long-baseline neutrino oscillation experiment using a J-PARC neutrino beam and Hyper-Kamiokande Peer-reviewed

K. Abe, H. Aihara, C. Andreopoulos, I. Anghel, A. Ariga, T. Ariga, R. Asfandiyarov, M. Askins, J. J. Back, P. Ballett, M. Barbi, G. J. Barker, G. Barr, F. Bay, P. Beltrame, V. Berardi, M. Bergevin, S. Berkman, T. Berry, S. Bhadra, F. D. M. Blaszczyk, A. Blondel, S. Bolognesi, S. B. Boyd, A. Bravar, C. Bronner, F. S. Cafagna, G. Carminati, S. L. Cartwright, M. G. Catanesi, K. Choi, J. H. Choi, G. Collazuol, G. Cowan, L. Cremonesi, G. Davies, G. De Rosa, C. Densham, J. Detwiler, D. Dewhurst, F. Di Lodovico, S. Di Luise, O. Drapier, S. Emery, A. Ereditato, P. Fernandez, T. Feusels, A. Finch, M. Fitton, M. Friend, Y. Fujii, Y. Fukuda, D. Fukuda, V. Galymov, K. Ganezer, M. Gonin, P. Gumplinger, D. R. Hadley, L. Haegel, A. Haesler, Y. Haga, B. Hartfiel, M. Hartz, Y. Hayato, M. Hierholzer, J. Hill, A. Himmel, S. Hirota, S. Horiuchi, K. Huang, A. K. Ichikawa, T. Iijima, M. Ikeda, J. Imber, K. Inoue, J. Insler, R. A. Intonti, T. Irvine, T. Ishida, H. Ishino, M. Ishitsuka, Y. Itow, A. Izmaylov, B. Jamieson, H. I. Jang, M. Jiang, K. K. Joo, C. K. Jung, A. Kaboth, T. Kajita, J. Kameda, Y. Karadhzov, T. Katori, E. Kearns, M. Khabibullin, A. Khotjantsev, J. Y. Kim, S. B. Kim, Y. Kishimoto, T. Kobayashi, M. Koga, A. Konaka, L. L. Kormos, A. Korzenev, Y. Koshio, W. R. Kropp, Y. Kudenko, T. Kutter, M. Kuze, L. Labarga, J. Lagoda, M. Laveder, M. Lawe, J. G. Learned, I. T. Lim, T. Lindner, A. Longhin, L. Ludovici, W. Ma, L. Magaletti, K. Mahn, M. Malek, C. Mariani, L. Marti, J. F. Martin, C. Martin, P. P. J. Martins, E. Mazzucato, N. McCauley, K. S. McFarland, C. McGrew, M. Mezzetto, H. Minakata, A. Minamino, S. Mine, O. Mineev, M. Miura, J. Monroe, T. Mori, S. Moriyama, T. Mueller, F. Muheim, M. Nakahata, K. Nakamura, T. Nakaya, S. Nakayama, M. Needham, T. Nicholls, M. Nirkko, Y. Nishimura, E. Noah, J. Nowak, H. Nunokawa, H. M. O'Keeffe, Y. Okajima, K. Okumura, S. M. Oser, E. O'Sullivan, T. Ovsiannikova, R. A. Owen, Y. Oyama, J. Perez, M. Y. Pac, V. Palladino, J. L. Palomino, V. Paolone, D. Payne, O. Perevozchikov, J. D. Perkin, C. Pistillo, S. Playfer, M. Posiadala-Zezula, J. -M. Poutissou, B. Quilain, M. Quinto, E. Radicioni, P. N. Ratoff, M. Ravonel, M. A. Rayner, A. Redij, F. Retiere, C. Riccio, E. Richard, E. Rondio, H. J. Rose, M. Ross-Lonergan, C. Rott, S. D. Rountree, A. Rubbia, R. Sacco, M. Sakuda, M. C. Sanchez, E. Scantamburlo, K. Scholberg, M. Scott, Y. Seiya, T. Sekiguchi, H. Sekiya, A. Shaikhiev, I. Shimizu, M. Shiozawa, S. Short, G. Sinnis, M. B. Smy, J. Sobczyk, H. W. Sobel, T. Stewart, J. L. Stone, Y. Suda, Y. Suzuki, A. T. Suzuki, R. Svoboda, R. Tacik, A. Takeda, A. Taketa, Y. Takeuchi, H. A. Tanaka, H. K. M. Tanaka, H. Tanaka, R. Terri, L. F. Thompson, M. Thorpe, S. Tobayama, N. Tolich, T. Tomura, C. Touramanis, T. Tsukamoto, M. Tzanov, Y. Uchida, M. R. Vagins, G. Vasseur, R. B. Vogelaar, C. W. Walter, D. Wark, M. O. Wascko, A. Weber, R. Wendell, R. J. Wilkes, M. J. Wilking, J. R. Wilson, T. Xin, K. Yamamoto, C. Yanagisawa, T. Yano, S. Yen, N. Yershov, M. Yokoyama, M. Zito

PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS　053C02　(5)　1-35　2015/05

DOI： 10.1093/ptep/ptv061 　

ISSN： 2050-3911
Results from KamLAND-Zen Peer-reviewed

K. Asakura, A. Gando, Y. Gando, T. Hachiya, S. Hayashida, H. Ikeda, K. Inoue, K. Ishidoshiro, T. Ishikawa, S. Ishio, M. Koga, R. Matsuda, S. Matsuda, T. Mitsui, D. Motoki, K. Nakamura, S. Obara, Y. Oki, M. Otani, T. Oura, I. Shimizu, Y. Shirahata, J. Shirai, A. Suzuki, H. Tachibana, K. Tamae, K. Ueshima, H. Watanabe, B. D. Xu, Y. Yamauchi, H. Yoshida, A. Kozlov, Y. Takemoto, S. Yoshida, K. Fushimi, T. I. Banks, S. J. Freedman, B. K. Fujikawa, T. O'Donnell, L. A. Winslow, B. E. Berger, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, M. P. Decowski

XXVI INTERNATIONAL CONFERENCE ON NEUTRINO PHYSICS AND ASTROPHYSICS (NEUTRINO 2014)　1666　170003-1-170003-8　2015

DOI： 10.1063/14915593 　

ISSN： 0094-243X
Laboratory studies on the removal of radon-born lead from KamLAND's organic liquid scintillator Peer-reviewed

G. Keefer, C. Grant, A. Piepke, T. Ebihara, H. Ikeda, Y. Kishimoto, Y. Kibe, Y. Koseki, M. Ogawa, J. Shirai, S. Takeuchi, C. Mauger, C. Zhang, G. Schweitzer, B. E. Berger, S. Dazeley, M. P. Decowski, J. A. Detwiler, Z. Djurcic, D. A. Dwyer, Y. Efremenko, S. Enomoto, S. J. Freedman, B. K. Fujikawa, K. Furuno, A. Gando, Y. Gando, G. Gratta, S. Hatakeyama, K. M. Heeger, L. Hsu, K. Ichimura, K. Inoue, T. Iwamoto, Y. Kamyshkov, H. J. Karwowski, M. Koga, A. Kozlov, C. E. Lane, J. G. Learned, J. Maricic, D. M. Markoff, S. Matsuno, D. McKee, R. D. McKeown, T. Miletic, T. Mitsui, M. Motoki, Kyo Nakajima, Kyohei Nakajima, K. Nakamura, T. O'Donnell, H. Ogawa, F. Piquemal, J. -S. Ricol, I. Shimizu, F. Suekane, A. Suzuki, R. Svoboda, O. Tajima, Y. Takemoto, K. Tamae, K. Tolich, W. Tornow, Hideki Watanabe, Hiroko Watanabe, L. A. Winslow, S. Yoshida

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT　769　79-87　2015/01

DOI： 10.1016/j.nima.2014.09.050 　

ISSN： 0168-9002

eISSN： 1872-9576
A compact ultra-clean system for deploying radioactive sources inside the KamLAND detector Peer-reviewed

T. I. Banks, S. J. Freedman, J. Wallig, N. Ybarrolaza, A. Gando, Y. Gando, H. Ikeda, K. Inoue, Y. Kishimoto, M. Koga, T. Mitsui, K. Nakamura, I. Shimizu, J. Shirai, A. Suzuki, Y. Takemoto, K. Tamae, K. Ueshima, H. Watanabe, B. D. Xu, H. Yoshida, S. Yoshida, A. Kozlov, C. Grant, G. Keefer, A. Piepke, T. Bloxham, B. K. Fujikawa, K. Han, K. Ichimura, H. Murayama, T. O'Donnell, H. M. Steiner, L. A. Winslow, D. A. Dwyer, R. D. McKeown, C. Zhang, B. E. Berger, C. E. Lane, J. Maricic, T. Miletic, M. Batygov, J. G. Learned, S. Matsuno, M. Sakai, G. A. Horton-Smith, K. E. Downum, G. Gratta, Y. Efremenko, O. Perevozchikov, H. J. Karwowski, D. M. Markoff, W. Tornow, K. M. Heeger, J. A. Detwiler, S. Enomoto, M. P. Decowski

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT　769　88-96　2015/01

DOI： 10.1016/j.nima.2014.09.068 　

ISSN： 0168-9002

eISSN： 1872-9576
CeLAND: search for a 4th light neutrino state with a 3 PBq 144Ce-144Pr electron antineutrino generator in KamLAND

A. Gando, Y. Gando, S. Hayashida, H. Ikeda, K. Inoue, K. Ishidoshiro, H. Ishikawa, M. Koga, R. Matsuda, S. Matsuda, T. Mitsui, D. Motoki, K. Nakamura, Y. Oki, M. Otani, I. Shimizu, J. Shirai, F. Suekane, A. Suzuki, Y. Takemoto, K. Tamae, K. Ueshima, H. Watanabe, B. D. Xu, S. Yamada, Y. Yamauchi, H. Yoshida, M. Cribier, M. Durero, V. Fischer, J. Gaffiot, N. Jonqueres, A. Kouchner, T. Lasserre, D. Leterme, A. Letourneau, D. Lhuillier, G. Mention, G. Rampal, L. Scola, Ch. Veyssiere, M. Vivier, P. Yala, B. E. Berger, A. Kozlov, T. Banks, D. Dwyer, B. K. Fujikawa, K. Han, Yu. G. Kolomensky, Y. Mei, T. O'Donnell, P. Decowski, D. M. Markoff, S. Yoshida, V. N. Kornoukhov, T. V, M. Gelis, G. V. Tikhomirov, J. G. Learned, J. Maricic, S. Matsuno, R. Milincic, H. J. Karwowski, Y. Efremenko, A. Detwiler, S. Enomoto

2013/12/04

More details Close

The reactor neutrino and gallium anomalies can be tested with a 3-4 PBq (75-100 kCi scale) 144Ce-144Pr antineutrino beta-source deployed at the center or next to a large low-background liquid scintillator detector. The antineutrino generator will be produced by the Russian reprocessing plant PA Mayak as early as 2014, transported to Japan, and deployed in the Kamioka Liquid Scintillator Anti-Neutrino Detector (KamLAND) as early as 2015. KamLAND's 13 m diameter target volume provides a suitable environment to measure the energy and position dependence of the detected neutrino flux. A characteristic oscillation pattern would be visible for a baseline of about 10 m or less, providing a very clean signal of neutrino disappearance into a yet-unknown, sterile neutrino state. This will provide a comprehensive test of the electron dissaperance neutrino anomalies and could lead to the discovery of a 4th neutrino state for Delta_m^2 > 0.1 eV^2 and sin^2(2theta) > 0.05.
Reactor on-off antineutrino measurement with KamLAND Peer-reviewed

A. Gando, Y. Gando, H. Hanakago, H. Ikeda, K. Inoue, K. Ishidoshiro, H. Ishikawa, M. Koga, R. Matsuda, S. Matsuda, T. Mitsui, D. Motoki, K. Nakamura, A. Obata, A. Oki, Y. Oki, M. Otani, I. Shimizu, J. Shirai, A. Suzuki, Y. Takemoto, K. Tamae, K. Ueshima, H. Watanabe, B. D. Xu, S. Yamada, Y. Yamauchi, H. Yoshida, A. Kozlov, S. Yoshida, A. Piepke, T. I. Banks, B. K. Fujikawa, K. Han, T. O'Donnell, B. E. Berger, J. G. Learned, S. Matsuno, M. Sakai, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, M. P. Decowski

Physical Review D - Particles, Fields, Gravitation and Cosmology　88　(3)　033001-1-033001-10　2013/08/02

DOI： 10.1103/PhysRevD.88.033001 　

ISSN： 1550-7998 1550-2368
Limit on neutrinoless ββ decay of Xe136 from the first phase of KamLAND-Zen and comparison with the positive claim in Ge76 Peer-reviewed

A. Gando, Y. Gando, H. Hanakago, H. Ikeda, K. Inoue, K. Ishidoshiro, R. Kato, M. Koga, S. Matsuda, T. Mitsui, D. Motoki, T. Nakada, K. Nakamura, A. Obata, A. Oki, Y. Ono, M. Otani, I. Shimizu, J. Shirai, A. Suzuki, Y. Takemoto, K. Tamae, K. Ueshima, H. Watanabe, B. D. Xu, S. Yamada, H. Yoshida, A. Kozlov, S. Yoshida, T. I. Banks, S. J. Freedman, B. K. Fujikawa, K. Han, T. O'Donnell, B. E. Berger, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, M. P. Decowski

Physical Review Letters　110　(6)　062502-1-062502-5　2013/02/07

DOI： 10.1103/PhysRevLett.110.062502 　

ISSN： 0031-9007 1079-7114
Limits on Majoron-emitting double-beta decays of Xe-136 in the KamLAND-Zen experiment Peer-reviewed

A. Gando, Y. Gando, H. Hanakago, H. Ikeda, K. Inoue, R. Kato, M. Koga, S. Matsuda, T. Mitsui, T. Nakada, K. Nakamura, A. Obata, A. Oki, Y. Ono, I. Shimizu, J. Shirai, A. Suzuki, Y. Takemoto, K. Tamae, K. Ueshima, H. Watanabe, B. D. Xu, S. Yamada, H. Yoshida, A. Kozlov, S. Yoshida, T. I. Banks, J. A. Detwiler, S. J. Freedman, B. K. Fujikawa, K. Han, T. O'Donnell, B. E. Berger, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, S. Enomoto, M. P. Decowski

PHYSICAL REVIEW C　86　(2)　021601-021604　2012/08

DOI： 10.1103/PhysRevC.86.021601 　

ISSN： 0556-2813
Measurement of the double-beta decay half-life of Xe-136 with the KamLAND-Zen experiment Peer-reviewed

A. Gando, Y. Gando, H. Hanakago, H. Ikeda, K. Inoue, R. Kato, M. Koga, S. Matsuda, T. Mitsui, T. Nakada, K. Nakamura, A. Obata, A. Oki, Y. Ono, I. Shimizu, J. Shirai, A. Suzuki, Y. Takemoto, K. Tamae, K. Ueshima, H. Watanabe, B. D. Xu, S. Yamada, H. Yoshida, A. Kozlov, S. Yoshida, T. I. Banks, J. A. Detwiler, S. J. Freedman, B. K. Fujikawa, K. Han, T. O'Donnell, B. E. Berger, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, S. Enomoto, M. P. Decowski

PHYSICAL REVIEW C　85　(4)　045504-045509　2012/04

DOI： 10.1103/PhysRevC.85.045504 　

ISSN： 0556-2813
SEARCH FOR EXTRATERRESTRIAL ANTINEUTRINO SOURCES WITH THE KamLAND DETECTOR Peer-reviewed

A. Gando, Y. Gando, K. Ichimura, H. Ikeda, K. Inoue, Y. Kibe, Y. Kishimoto, M. Koga, Y. Minekawa, T. Mitsui, T. Morikawa, N. Nagai, K. Nakajima, K. Nakamura, K. Narita, I. Shimizu, Y. Shimizu, J. Shirai, F. Suekane, A. Suzuki, H. Takahashi, N. Takahashi, Y. Takemoto, K. Tamae, H. Watanabe, B. D. Xu, H. Yabumoto, H. Yoshida, S. Yoshida, S. Enomoto, A. Kozlov, H. Murayama, C. Grant, G. Keefer, A. Piepke, T. I. Banks, T. Bloxham, J. A. Detwiler, S. J. Freedman, B. K. Fujikawa, K. Han, R. Kadel, T. O'Donnell, H. M. Steiner, D. A. Dwyer, R. D. McKeown, C. Zhang, B. E. Berger, C. E. Lane, J. Maricic, T. Miletic, M. Batygov, J. G. Learned, S. Matsuno, M. Sakai, G. A. Horton-Smith, K. E. Downum, G. Gratta, Y. Efremenko, Y. Kamyshkov, O. Perevozchikov, H. J. Karwowski, D. M. Markoff, W. Tornow, K. M. Heeger, M. P. Decowski

ASTROPHYSICAL JOURNAL　745　(2)　193-1-193-8　2012/02

DOI： 10.1088/0004-637X/745/2/193 　

ISSN： 0004-637X
Measurement of the B-8 solar neutrino flux with the KamLAND liquid scintillator detector Peer-reviewed

S. Abe, K. Furuno, A. Gando, Y. Gando, K. Ichimura, H. Ikeda, K. Inoue, Y. Kibe, W. Kimura, Y. Kishimoto, M. Koga, Y. Minekawa, T. Mitsui, T. Morikawa, N. Nagai, K. Nakajima, K. Nakamura, M. Nakamura, K. Narita, I. Shimizu, Y. Shimizu, J. Shirai, F. Suekane, A. Suzuki, H. Takahashi, N. Takahashi, Y. Takemoto, K. Tamae, H. Watanabe, B. D. Xu, H. Yabumoto, E. Yonezawa, H. Yoshida, S. Yoshida, S. Enomoto, A. Kozlov, H. Murayama, C. Grant, G. Keefer, D. McKee, A. Piepke, T. I. Banks, T. Bloxham, J. A. Detwiler, S. J. Freedman, B. K. Fujikawa, K. Han, R. Kadel, T. O'Donnell, H. M. Steiner, L. A. Winslow, D. A. Dwyer, C. Mauger, R. D. McKeown, C. Zhang, B. E. Berger, C. E. Lane, J. Maricic, T. Miletic, M. Batygov, J. G. Learned, S. Matsuno, S. Pakvasa, M. Sakai, G. A. Horton-Smith, A. Tang, K. E. Downum, G. Gratta, K. Tolich, Y. Efremenko, Y. Kamyshkov, O. Perevozchikov, H. J. Karwowski, D. M. Markoff, W. Tornow, K. M. Heeger, F. Piquemal, J-S. Ricol, M. P. Decowski

PHYSICAL REVIEW C　84　(3)　035804-1-035804-6　2011/09

DOI： 10.1103/PhysRevC.84.035804 　

ISSN： 0556-2813
Partial radiogenic heat model for Earth revealed by geoneutrino measurements Peer-reviewed

A. Gando, Y. Gando, K. Ichimura, H. Ikeda, K. Inoue, Y. Kibe, Y. Kishimoto, M. Koga, Y. Minekawa, T. Mitsui, T. Morikawa, N. Nagai, K. Nakajima, K. Nakamura, K. Narita, I. Shimizu, Y. Shimizu, J. Shirai, F. Suekane, A. Suzuki, H. Takahashi, N. Takahashi, Y. Takemoto, K. Tamae, H. Watanabe, B. D. Xu, H. Yabumoto, H. Yoshida, S. Yoshida, S. Enomoto, A. Kozlov, H. Murayama, C. Grant, G. Keefer, A. Piepke, T. I. Banks, T. Bloxham, J. A. Detwiler, S. J. Freedman, B. K. Fujikawa, K. Han, R. Kadel, T. O'Donnell, H. M. Steiner, D. A. Dwyer, R. D. McKeown, C. Zhang, B. E. Berger, C. E. Lane, J. Maricic, T. Miletic, M. Batygov, J. G. Learned, S. Matsuno, M. Sakai, G. A. Horton-Smith, K. E. Downum, G. Gratta, K. Tolich, Y. Efremenko, O. Perevozchikov, H. J. Karwowski, D. M. Markoff, W. Tornow, K. M. Heeger, M. P. Decowski

NATURE GEOSCIENCE　4　(9)　647-651　2011/09

DOI： 10.1038/ngeo1205 　

ISSN： 1752-0894
Constraints on theta(13) from a three-flavor oscillation analysis of reactor antineutrinos at KamLAND Peer-reviewed

A. Gando, Y. Gando, K. Ichimura, H. Ikeda, K. Inoue, Y. Kibe, Y. Kishimoto, M. Koga, Y. Minekawa, T. Mitsui, T. Morikawa, N. Nagai, K. Nakajima, K. Nakamura, K. Narita, I. Shimizu, Y. Shimizu, J. Shirai, F. Suekane, A. Suzuki, H. Takahashi, N. Takahashi, Y. Takemoto, K. Tamae, H. Watanabe, B. D. Xu, H. Yabumoto, H. Yoshida, S. Yoshida, S. Enomoto, A. Kozlov, H. Murayama, C. Grant, G. Keefer, A. Piepke, T. I. Banks, T. Bloxham, J. A. Detwiler, S. J. Freedman, B. K. Fujikawa, K. Han, R. Kadel, T. O'Donnell, H. M. Steiner, D. A. Dwyer, R. D. McKeown, C. Zhang, B. E. Berger, C. E. Lane, J. Maricic, T. Miletic, M. Batygov, J. G. Learned, S. Matsuno, M. Sakai, G. A. Horton-Smith, K. E. Downum, G. Gratta, Y. Efremenko, O. Perevozchikov, H. J. Karwowski, D. M. Markoff, W. Tornow, K. M. Heeger, M. P. Decowski

PHYSICAL REVIEW D　83　(5)　052002-052011　2011/03

DOI： 10.1103/PhysRevD.83.052002 　

ISSN： 1550-7998
Production of radioactive isotopes through cosmic muon spallation in KamLAND

S. Abe, S. Enomoto, S. Enomoto, K. Furuno, Y. Gando, H. Ikeda, K. Inoue, K. Inoue, Y. Kibe, Y. Kishimoto, M. Koga, M. Koga, Y. Minekawa, T. Mitsui, K. Nakajima, K. Nakajima, K. Nakajima, K. Nakamura, K. Nakamura, M. Nakamura, I. Shimizu, Y. Shimizu, J. Shirai, F. Suekane, A. Suzuki, Y. Takemoto, K. Tamae, A. Terashima, H. Watanabe, E. Yonezawa, S. Yoshida, A. Kozlov, H. Murayama, H. Murayama, J. Busenitz, T. Classen, T. Classen, C. Grant, G. Keefer, D. S. Leonard, D. S. Leonard, D. McKee, D. McKee, A. Piepke, A. Piepke, T. I. Banks, T. Bloxham, J. A. Detwiler, S. J. Freedman, S. J. Freedman, B. K. Fujikawa, B. K. Fujikawa, F. Gray, F. Gray, E. Guardincerri, L. Hsu, L. Hsu, K. Ichimura, R. Kadel, C. Lendvai, K. B. Luk, T. O'Donnell, H. M. Steiner, L. A. Winslow, L. A. Winslow, D. A. Dwyer, C. Jillings, C. Jillings, C. Mauger, C. Mauger, R. D. McKeown, P. Vogel, C. Zhang, B. E. Berger, C. E. Lane, J. Maricic, T. Miletic, M. Batygov, J. G. Learned, S. Matsuno, S. Pakvasa, J. Foster, G. A. Horton-Smith, G. A. Horton-Smith, A. Tang, S. Dazeley, S. Dazeley, K. E. Downum, G. Gratta, K. Tolich, K. Tolich, W. Bugg, Y. Efremenko, Y. Efremenko, Y. Kamyshkov, O. Perevozchikov, H. J. Karwowski, H. J. Karwowski, D. M. Markoff, D. M. Markoff

Physical Review C - Nuclear Physics　81　2010/02/23

DOI： 10.1103/PhysRevC.81.025807 　

ISSN： 0556-2813
Production of radioactive isotopes through cosmic muon spallation in KamLAND Peer-reviewed

S. Abe, S. Enomoto, K. Furuno, Y. Gando, H. Ikeda, K. Inoue, Y. Kibe, Y. Kishimoto, M. Koga, Y. Minekawa, T. Mitsui, K. Nakajima, K. Nakajima, K. Nakamura, M. Nakamura, I. Shimizu, Y. Shimizu, J. Shirai, F. Suekane, A. Suzuki, Y. Takemoto, K. Tamae, A. Terashima, H. Watanabe, E. Yonezawa, S. Yoshida, A. Kozlov, H. Murayama, J. Busenitz, T. Classen, C. Grant, G. Keefer, D. S. Leonard, D. McKee, A. Piepke, T. I. Banks, T. Bloxham, J. A. Detwiler, S. J. Freedman, B. K. Fujikawa, F. Gray, E. Guardincerri, L. Hsu, K. Ichimura, R. Kadel, C. Lendvai, K. -B. Luk, T. O'Donnell, H. M. Steiner, L. A. Winslow, D. A. Dwyer, C. Jillings, C. Mauger, R. D. McKeown, P. Vogel, C. Zhang, B. E. Berger, C. E. Lane, J. Maricic, T. Miletic, M. Batygov, J. G. Learned, S. Matsuno, S. Pakvasa, J. Foster, G. A. Horton-Smith, A. Tang, S. Dazeley, K. E. Downum, G. Gratta, K. Tolich, W. Bugg, Y. Efremenko, Y. Kamyshkov, O. Perevozchikov, H. J. Karwowski, D. M. Markoff, W. Tornow, K. M. Heeger, F. Piquemal, J. -S. Ricol, M. P. Decowski

PHYSICAL REVIEW C　81　(2)　025807-025822　2010/02

DOI： 10.1103/PhysRevC.81.025807 　

ISSN： 2469-9985

eISSN： 2469-9993
The KamLAND full-volume calibration system Peer-reviewed

B. E. Berger, J. Busenitz, T. Classen, M. P. Decowski, D. A. Dwyer, G. Elor, A. Frank, S. J. Freedman, B. K. Fujikawa, K. M. Galloway, F. Gray, M. Heeger, L. Hsu, K. Ichimura, R. Kadel, G. Keefer, C. Lendvai, D. McKee, T. O'Donnell, A. Piepke, H. M. Steiner, D. Syversrud, J. Wallig, L. A. Winslow, T. Ebihara, S. Enomoto, K. Furuno, Y. Gando, H. Ikeda, K. Inoue, Y. Kibe, Y. Kishimoto, M. Koga, Y. Minekawa, T. Mitsui, K. Nakajima, K. Nakajima, K. Nakamura, K. Owada, I. Shimizu, Y. Shimizu, J. Shirai, F. Suekane, A. Suzuki, K. Tamae, S. Yoshida, A. Kozlov, H. Murayama, C. Grant, D. S. Leonard, K. B. Luk, C. Jillings, C. Mauger, R. D. McKeown, C. Zhang, C. E. Lane, J. Maricic, T. Miletic, M. Batygov, J. G. Learned, S. Matsuno, S. Pakvasa, J. Foster, G. A. Horton-Smith, A. Tang, S. Dazeley, K. E. Downum, G. Gratta, K. Tolich, W. Bugg, Y. Efremenko, Y. Kamyshkov, O. Perevozchikov, H. J. Karwowski, D. M. Markoff, W. Tornow, F. Piquemal, J. S. Ricol

Journal of Instrumentation　4　(4)　04017-04044　2009

DOI： 10.1088/1748-0221/4/04/P04017 　

ISSN： 1748-0221
Precision Measurement of Neutrino Oscillation Parameters with KamLAND (vol 100, artn 221803, 2008) Peer-reviewed

S. Abe, T. Ebihara, S. Enomoto, K. Furuno, Y. Gando, K. Ichimura, H. Ikeda, K. Inoue, Y. Kibe, Y. Kishimoto, M. Koga, Y. Shimizu, A. Kozlov, Y. Minekawa, T. Mitsui, K. Nakajima, K. Nakajima, K. Nakamura, M. Nakamura, K. Owada, I. Shimizu, J. Shirai, F. Suekane, A. Suzuki, Y. Takemoto, K. Tamae, A. Terashima, H. Watanabe, E. Yonezawa, S. Yoshida, J. Busenitz, T. Classen, C. Grant, G. Keefer, D. S. Leonard, D. McKee, A. Piepke, M. P. Decowski, J. A. Detwiler, S. J. Freedman, B. K. Fujikawa, F. Gray, E. Guardincerri, L. Hsu, R. Kadel, C. Lendvai, K.-B. Luk, H. Murayama, T. O'Donnell, H. M. Steiner, L. A. Winslow, D. A. Dwyer, C. Jillings, C. Mauger, R. D. McKeown, P. Vogel, C. Zhang, B. E. Berger, C. E. Lane, J. Maricic, T. Miletic, M. Batygov, J. G. Learned, S. Matsuno, S. Pakvasa, J. Foster, G. A. Horton-Smith, A. Tang, S. Dazeley, K. E. Downum, G. Gratta, K. Tolich, W. Bugg, Y. Efremenko, Y. Kamyshkov, O. Perevozchikov, H. J. Karwowski, D. M. Markoff, W. Tornow, K. M. Heeger, F. Piquemal, J.-S. Ricol

PHYSICAL REVIEW LETTERS　101　(25)　2008/12

DOI： 10.1103/PhysRevLett.101.259901 　

ISSN： 0031-9007
Erratum: Precision measurement of neutrino oscillation parameters with KamLAND (Physical Review Letters (2008) 100 (221803))

S. Abe, T. Ebihara, S. Enomoto, K. Furuno, Y. Gando, K. Ichimura, H. Ikeda, K. Inoue, Y. Kibe, Y. Kishimoto, M. Koga, Y. Shimizu, A. Kozlov, Y. Minekawa, T. Mitsui, K. Nakajima, K. Nakajima, K. Nakamura, M. Nakamura, K. Owada, I. Shimizu, J. Shirai, F. Suekane, A. Suzuki, Y. Takemoto, K. Tamae, A. Terashima, H. Watanabe, E. Yonezawa, S. Yoshida, J. Busenitz, T. Classen, C. Grant, G. Keefer, D. S. Leonard, D. McKee, A. Piepke, M. P. Decowski, J. A. Detwiler, S. J. Freedman, B. K. Fujikawa, F. Gray, E. Guardincerri, L. Hsu, R. Kadel, C. Lendvai, K. B. Luk, H. Murayama, T. O'Donnell, H. M. Steiner, L. A. Winslow, D. A. Dwyer, C. Jillings, C. Mauger, R. D. McKeown, P. Vogel, C. Zhang, B. E. Berger, C. E. Lane, J. Maricic, T. Miletic, M. Batygov, J. G. Learned, S. Matsuno, S. Pakvasa, J. Foster, G. A. Horton-Smith, A. Tang, S. Dazeley, K. E. Downum, G. Gratta, K. Tolich, W. Bugg, Y. Efremenko, Y. Kamyshkov, O. Perevozchikov, H. J. Karwowski, D. M. Markoff, W. Tornow, K. M. Heeger, F. Piquemal, J. S. Ricol

Physical Review Letters　101　2008/09/12

DOI： 10.1103/PhysRevLett.101.119904 　

ISSN： 0031-9007
Precision measurement of neutrino oscillation parameters with KamLAND

S. Abe, T. Ebihara, S. Enomoto, K. Furuno, Y. Gando, K. Ichimura, H. Ikeda, K. Inoue, Y. Kibe, Y. Kishimoto, M. Koga, A. Kozlov, Y. Minekawa, T. Mitsui, K. Nakajima, K. Nakajima, K. Nakajima, K. Nakamura, M. Nakamura, K. Owada, I. Shimizu, Y. Shimizu, J. Shirai, F. Suekane, A. Suzuki, Y. Takemoto, K. Tamae, A. Terashima, H. Watanabe, E. Yonezawa, S. Yoshida, J. Busenitz, T. Classen, C. Grant, G. Keefer, D. S. Leonard, D. McKee, A. Piepke, M. P. Decowski, J. A. Detwiler, S. J. Freedman, B. K. Fujikawa, F. Gray, F. Gray, E. Guardincerri, L. Hsu, L. Hsu, R. Kadel, C. Lendvai, K. B. Luk, H. Murayama, T. O'Donnell, H. M. Steiner, L. A. Winslow, D. A. Dwyer, C. Jillings, C. Jillings, C. Mauger, R. D. McKeown, P. Vogel, C. Zhang, B. E. Berger, C. E. Lane, J. Maricic, T. Miletic, M. Batygov, J. G. Learned, S. Matsuno, S. Pakvasa, J. Foster, G. A. Horton-Smith, A. Tang, S. Dazeley, S. Dazeley, K. E. Downum, G. Gratta, K. Tolich, W. Bugg, Y. Efremenko, Y. Kamyshkov, O. Perevozchikov, H. J. Karwowski, H. J. Karwowski, H. J. Karwowski, D. M. Markoff, D. M. Markoff, D. M. Markoff, W. Tornow, W. Tornow, W. Tornow, K. M. Heeger, F. Piquemal, J. S. Ricol

Physical Review Letters　100　(22)　221803-221803　2008/06/05
Publisher: American Physical Society
DOI： 10.1103/PhysRevLett.100.221803 　

ISSN： 0031-9007
Search for the invisible decay of neutrons with KamLAND Peer-reviewed

T Araki, S Enomoto, K Furuno, Y Gando, K Ichimura, H Ikeda, K Inoue, Y Kishimoto, M Koga, Y Koseki, T Maeda, T Mitsui, M Motoki, K Nakajima, K Nakamura, H Ogawa, M Ogawa, K Owada, JS Ricol, Shimizu, I, J Shirai, F Suekane, A Suzuki, K Tada, S Takeuchi, K Tamae, Y Tsuda, H Watanabe, J Busenitz, T Classen, Z Djurcic, G Keefer, DS Leonard, A Piepke, E Yakushev, BE Berger, YD Chan, MP Decowski, DA Dwyer, SJ Freedman, BK Fujikawa, J Goldman, F Gray, KM Heeger, L Hsu, KT Lesko, KB Luk, H Murayama, T O'Donnell, AWP Poon, HM Steiner, LA Winslow, C Jillings, C Mauger, RD McKeown, P Vogel, C Zhang, CE Lane, T Miletic, G Guillian, JG Learned, J Maricic, S Matsuno, S Pakvasa, GA Horton-Smith, S Dazeley, S Hatakeyama, A Rojas, R Svoboda, BD Dieterle, J Detwiler, G Gratta, K Ishii, N Tolich, Y Uchida, M Batygov, W Bugg, Y Efremenko, Y Kamyshkov, A Kozlov, Y Nakamura, HJ Karwowski, DM Markoff, RM Rohm, W Tornow, R Wendell, MJ Chen, YF Wang, F Piquemal

PHYSICAL REVIEW LETTERS　96　(10)　101802　2006/03

DOI： 10.1103/PhysRevLett.96.101802 　

ISSN： 0031-9007

eISSN： 1079-7114
Experimental investigation of geologically produced antineutrinos with KamLAND Peer-reviewed

T Araki, S Enomoto, K Furuno, Y Gando, K Ichimura, H Ikeda, K Inoue, Y Kishimoto, M Koga, Y Koseki, T Maeda, T Mitsui, M Motoki, K Nakajima, H Ogawa, M Ogawa, K Owada, JS Ricol, Shimizu, I, J Shirai, F Suekane, A Suzuki, K Tada, S Takeuchi, K Tamae, Y Tsuda, H Watanabe, J Busenitz, T Classen, Z Djurcic, G Keefer, D Leonard, A Piepke, E Yakushev, BE Berger, YD Chan, MP Decowski, DA Dwyer, SJ Freedman, BK Fujikawa, J Goldman, F Gray, KM Heeger, L Hsu, KT Lesko, KB Luk, H Murayama, T O'Donnell, AWP Poon, HM Steiner, LA Winslow, C Mauger, RD McKeown, P Vogel, CE Lane, T Miletic, G Guillian, JG Learned, J Maricic, S Matsuno, S Pakvasa, GA Horton-Smith, S Dazeley, S Hatakeyama, A Rojas, R Svoboda, BD Dieterle, J Detwiler, G Gratta, K Ishii, N Tolich, Y Uchida, M Batygov, W Bugg, Y Efremenko, Y Kamyshkov, A Kozlov, Y Nakamura, HJ Karwowski, DM Markoff, K Nakamura, RM Rohm, W Tornow, R Wendell, MJ Chen, YF Wang, F Piquemal

NATURE　436　(7050)　499-503　2005/07

DOI： 10.1038/nature03980 　

ISSN： 0028-0836
Measurement of neutrino oscillation with KamLAND: Evidence of spectral distortion Peer-reviewed

T Araki, K Eguchi, S Enomoto, K Furuno, K Ichimura, H Ikeda, K Inoue, K Ishihara, T Iwamoto, T Kawashima, Y Kishimoto, M Koga, Y Koseki, T Maeda, T Mitsui, M Motoki, K Nakajima, H Ogawa, K Owada, JS Ricol, Shimizu, I, J Shirai, F Suekane, A Suzuki, K Tada, O Tajima, K Tamae, Y Tsuda, H Watanabe, J Busenitz, T Classen, Z Djurcic, G Keefer, K McKinny, DM Mei, A Piepke, E Yakushev, BE Berger, YD Chan, MP Decowski, DA Dwyer, SJ Freedman, Y Fu, BK Fujikawa, J Goldman, F Gray, KM Heeger, KT Lesko, KB Luk, H Murayama, AWP Poon, HM Steiner, LA Winslow, GA Horton-Smith, C Mauger, RD McKeown, P Vogel, CE Lane, T Miletic, PW Gorham, G Guillian, JG Learned, J Maricic, S Matsuno, S Pakvasa, S Dazeley, S Hatakeyama, A Rojas, R Svoboda, BD Dieterle, J Detwiler, G Gratta, K Ishii, N Tolich, Y Uchida, M Batygov, W Bugg, Y Efremenko, Y Kamyshkov, A Kozlov, Y Nakamura, CR Gould, HJ Karwowski, DM Markoff, JA Messimore, K Nakamura, RM Rohm, W Tornow, R Wendell, AR Young, MJ Chen, YF Wang, F Piquemal

PHYSICAL REVIEW LETTERS　94　(8)　081801　2005/03

DOI： 10.1103/PhysRevLett.94.081801 　

ISSN： 0031-9007
High sensitivity search for (nu)over-bar(e)'s from the Sun and other sources at KamLAND Peer-reviewed

K Eguchi, S Enomoto, K Furuno, H Ikeda, K Ikeda, K Inoue, K Ishihara, T Iwamoto, T Kawashima, Y Kishimoto, M Koga, Y Koseki, T Maeda, T Mitsui, M Motoki, K Nakajima, H Ogawa, K Owada, F Piquemal, Shimizu, I, J Shirai, F Suekane, A Suzuki, K Tada, O Tajima, T Takayama, K Tamae, H Watanabe, J Busenitz, Z Djurcic, K McKinny, DM Mei, A Piepke, E Yakushev, BE Berger, YD Chan, MP Decowski, DA Dwyer, SJ Freedman, Y Fu, BK Fujikawa, J Goldman, KM Heeger, KT Lesko, KB Luk, H Murayama, DR Nygren, CE Okada, AWP Poon, HM Steiner, LA Winslow, GA Horton-Smith, C Mauger, RD McKeown, B Tipton, P Vogel, CE Lane, T Miletic, PW Gorham, G Guillian, JG Learned, J Maricic, S Matsuno, S Pakvasa, S Dazeley, S Hatakeyama, R Svoboda, BD Dieterle, M DiMauro, J Detwiler, G Gratta, K Ishii, N Tolich, Y Uchida, M Batygov, W Bugg, Y Efremenko, Y Kamyshkov, A Kozlov, Y Nakamura, CR Gould, HJ Karwowski, DM Markoff, JA Messimore, K Nakamura, RM Rohm, W Tornow, AR Young, MJ Chen, YF Wang

PHYSICAL REVIEW LETTERS　92　(7)　071301-071305　2004/02

DOI： 10.1103/PhysRevLett.92.071301 　

ISSN： 0031-9007
The Super-Kamiokande detector Peer-reviewed

S Fukuda, Y Fukuda, T Hayakawa, E Ichihara, M Ishitsuka, Y Itow, T Kajita, J Kameda, K Kaneyuki, S Kasuga, K Kobayashi, Y Kobayashi, Y Koshio, M Miura, S Moriyama, M Nakahata, S Nakayama, T Namba, Y Obayashi, A Okada, M Oketa, K Okumura, T Oyabu, N Sakurai, M Shiozawa, Y Suzuki, Y Takeuchi, T Toshito, Y Totsuka, S Yamada, S Desai, M Earl, JT Hong, E Kearns, M Masuzawa, MD Messier, JL Stone, LR Sulak, CW Walter, W Wang, K Scholberg, T Barszczak, D Casper, DW Liu, W Gajewski, PG Halverson, J Hsu, WR Kropp, S Mine, LR Price, F Reines, M Smy, HW Sobel, MR Vagins, KS Ganezer, WE Keig, RW Ellsworth, S Tasaka, JW Flanagan, A Kibayashi, JG Learned, S Matsuno, VJ Stenger, Y Hayato, T Ishii, A Ichikawa, J Kanzaki, T Kobayashi, T Maruyama, K Nakamura, Y Oyama, A Sakai, M Sakuda, O Sasaki, S Echigo, T Iwashita, M Kohama, AT Suzuki, M Hasegawa, T Inagaki, Kato, I, H Maesaka, T Nakaya, K Nishikawa, S Yamamoto, TJ Haines, BK Kim, R Sanford, R Svoboda, E Blaufuss, ML Chen, Z Conner, JA Goodman, E Guillian, GW Sullivan, D Turcan, A Habig, M Ackerman, F Goebel, J Hill, CK Jung, T Kato, D Kerr, M Malek, K Martens, C Mauger, C McGrew, E Sharkey, B Viren, C Yanagisawa, W Doki, S Inaba, K Ito, M Kirisawa, M Kitaguchi, C Mitsuda, K Miyano, C Saji, M Takahata, M Takahashi, K Higuchi, Y Kajiyama, A Kusano, Y Nagashima, K Nitta, M Takita, T Yamaguchi, M Yoshida, HI Kim, SB Kim, J Yoo, H Okazawa, M Etoh, K Fujita, Y Gando, A Hasegawa, T Hasegawa, S Hatakeyama, K Inoue, K Ishihara, T Iwamoto, M Koga, Nishiyama, I, H Ogawa, J Shirai, A Suzuki, T Takayama, F Tsushima, M Koshiba, Y Ichikawa, T Hashimoto, Y Hatakeyama, M Koike, T Horiuchi, M Nemoto, K Nishijima, H Takeda, H Fujiyasu, T Futagami, H Ishino, Y Kanaya, M Morii, H Nishihama, H Nishimura, T Suzuki, Y Watanabe, D Kielczewska, U Golebiewska, HG Berns, SB Boyd, RA Doyle, JS George, AL Stachyra, LL Wai, RJ Wilkes, KK Young, H Kobayashi

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT　501　(2-3)　418-462　2003/04

DOI： 10.1016/S0168-9002(03)00425-X 　

ISSN： 0168-9002

eISSN： 1872-9576
First results from KamLAND: Evidence for reactor antineutrino disappearance Peer-reviewed

K Eguchi, S Enomoto, K Furuno, J Goldman, H Hanada, H Ikeda, K Ikeda, K Inoue, K Ishihara, W Itoh, T Iwamoto, T Kawaguchi, T Kawashima, H Kinoshita, Y Kishimoto, M Koga, Y Koseki, T Maeda, T Mitsui, M Motoki, K Nakajima, M Nakajima, T Nakajima, H Ogawa, K Owada, T Sakabe, Shimizu, I, J Shirai, F Suekane, A Suzuki, K Tada, O Tajima, T Takayama, K Tamae, H Watanabe, J Busenitz, Z Djurcic, K McKinny, DM Mei, A Piepke, E Yakushev, BE Berger, YD Chan, MP Decowski, DA Dwyer, SJ Freedman, Y Fu, BK Fujikawa, KM Heeger, KT Lesko, KB Luk, H Murayama, DR Nygren, CE Okada, AWP Poon, HM Steiner, LA Winslow, GA Horton-Smith, RD McKeown, J Ritter, B Tipton, P Vogel, CE Lane, T Miletic, PW Gorham, G Guillian, JG Learned, J Maricic, S Matsuno, S Pakvasa, S Dazeley, S Hatakeyama, M Murakami, RC Svoboda, BD Dieterle, M DiMauro, J Detwiler, G Gratta, K Ishii, N Tolich, Y Uchida, M Batygov, W Bugg, H Cohn, Y Efremenko, Y Kamyshkov, A Kozlov, Y Nakamura, LD Braeckeleer, CR Gould, HJ Karwowski, DM Markoff, JA Messimore, K Nakamura, RM Rohm, W Tornow, AR Young, YF Wang

PHYSICAL REVIEW LETTERS　90　(2)　021802-021807　2003/01

DOI： 10.1103/PhysRevLett.90.021802 　

ISSN： 0031-9007

eISSN： 1079-7114
Measurement of the flux and zenith angle distribution of upward through going muons by Super-Kamiokande Peer-reviewed

Fukuda, Y., Hayakawa, T., Ichihara, E., Inoue, K., Ishihara, K., Ishino, H., Itow, Y., Kajita, T., Kameda, J., Kasuga, S., Kobayashi, K., Kobayashi, Y., Koshio, Y., Miura, M., Nakahata, M., Nakayama, S., Okada, A., Okumura, K., Sakurai, N., Shiozawa, M., Suzuki, Y., Takeuchi, Y., Totsuka, Y., Yamada, S., Earl, M., Habig, Alec, Kearns, E., Messier, M.D., Scholberg, K., Stone, J.L., Sulak, L.R., Walter, C.W., Goldhaber, M., Barszczak, T., Casper, D., Gajewski, W., Kropp, W.R., Price, L.R., Reines, F., Smy, M., Sobel, H.W., Vagins, M.R., Ganezer, K.S., Keig, W.E., Ellsworth, R.W., Tasaka, S., Flanagan, J.W., Kibayashi, A., Learned, J.G., Matsuno, S., Stenger, V.J., Takemori, D., Ishii, T., Kanzaki, J., Kobayashi, T., Mine, S., Nakamura, K., Nishikawa, K., Oyama, Y., Sakai, A., Sakuda, M., Sasaki, Osamu, Echigo, S., Kohama, M., Suzuki, A.T., Haines, T.J., Blaufuss, E., Kim, B.K., Sanford, R., Svoboda, R., Chen, M.L., Goodman, J.A., Sullivan, G.W., Hill, J., Jung, C.K., Martens, K., Mauger, C., McGrew, C., Sharkey, E., Viren, B., Yanagisawa, C., Doki, W., Miyano, K., Okazawa, H., Saji, C., Takahata, M., Nagashima, Y., Takita, M., Yamaguchi, T., Yoshida, M., Kim, S.B., Etoh, M., Fujita, K., Hasegawa, A., Hasegawa, T., Hatakeyama, S., Iwamoto, T., Koga, M., Maruyama, T., Ogawa, H., Shirai, J., Suzuki, A., Tsushima, F., Koshiba, M., Nemoto, M., Nishijima, K., Futagami, T., Hayato, Y., Kanaya, Y., Kaneyuki, K., Watanabe, Y., Kielczewska, D., Doyle, R.A., George, J.S., Stachyra, A.L., Wai, L.L., Wilkes, R.J., Young, K.K.

Phys.Rev.Lett.　82　(13)　2644-2648　1999

DOI： 10.1103/PhysRevLett.82.2644 　
Neutrino induced upward stopping muons in Super-Kamiokande Peer-reviewed

Fukuda, Y., Ishihara, K., Itow, Y., Kajita, T., Kameda, J., Kasuga, S., Kobayashi, K., Kobayashi, Y., Koshio, Y., Miura, M., Nakahata, M., Nakayama, S., Obayashi, Y., Okada, A., Okumura, K., Sakurai, N., Shiozawa, M., Suzuki, Y., Takeuchi, H., Takeuchi, Y., Totsuka, Y., Yamada, S., Earl, M., Habig, Alec, Kearns, E., Messier, M.D., Scholberg, K., Stone, J.L., Sulak, L.R., Walter, C.W., Goldhaber, M., Barszczak, T., Casper, D., Gajewski, W., Kropp, W.R., Mine, S., Price, L.R., Smy, M., Sobel, H.W., Vagins, M.R., Ganezer, K.S., Keig, W.E., Ellsworth, R.W., Tasaka, S., Kibayashi, A., Learned, J.G., Matsuno, S., Stenger, V.J., Takemori, D., Ishii, T., Ishino, H., Kobayashi, T., Nakamura, K., Oyama, Y., Sakai, A., Sakuda, M., Sasaki, Osamu, Echigo, S., Kohama, M., Suzuki, A.T., Inagaki, T., Nishikawa, K., Haines, T.J., Blaufuss, E., Kim, B.K., Sanford, R., Svoboda, R., Chen, M.L., Goodman, J.A., Sullivan, G.W., Hill, J., Jung, C.K., Martens, K., Mauger, C., McGrew, C., Sharkey, E., Viren, B., Yanagisawa, C., Doki, W., Kirisawa, M., Inaba, S., Miyano, K., Okazawa, H., Saji, C., Takahashi, M., Takahata, M., Higuchi, K., Nagashima, Y., Takita, M., Yamaguchi, T., Yoshida, M., Kim, S.B., Etoh, M., Hasegawa, A., Hasegawa, T., Hatakeyama, S., Inoue, K., Iwamoto, T., Koga, M., Maruyama, T., Ogawa, H., Shirai, J., Suzuki, A., Tsushima, F., Koshiba, M., Hatakeyama, Y., Koike, M., Nemoto, M., Nishijima, K., Fujiyasu, H., Futagami, T., Hayato, Y., Kanaya, Y., Kaneyuki, K., Watanabe, Y., Kielczewska, D., George, J.S., Stachyra, A.L., Wilkes, R.J., Young, K.K.

Phys.Lett.B　467　185-193　1999

DOI： 10.1016/S0370-2693(99)01188-0 　
Measurement of the flux and zenith-angle distribution of upward through-going muons in Kamiokande II+III Peer-reviewed

S Hatakeyama, T Hara, Y Fukuda, T Hayakawa, K Inoue, K Ishihara, H Ishino, S Joukou, T Kajita, S Kasuga, Y Koshio, T Kumita, K Matsumoto, M Nakahata, K Nakamura, K Okumura, A Sakai, M Shiozawa, J Suzuki, Y Suzuki, T Tomoeda, Y Totsuka, KS Hirata, K Kihara, Y Oyama, M Koshiba, K Nishijima, T Horiuchi, K Fujita, M Koga, T Maruyama, A Suzuki, M Mori, T Suda, AT Suzuki, T Ishizuka, K Miyano, H Okazawa, Y Nagashima, M Takita, T Yamaguchi, Y Hayato, K Kaneyuki, T Suzuki, Y Takeuchi, T Tanimori, S Tasaka, E Ichihara, S Miyamoto, K Nishikawa

PHYSICAL REVIEW LETTERS　81　(10)　2016-2019　1998/09

DOI： 10.1103/PhysRevLett.81.2016 　

ISSN： 0031-9007
Evidence for oscillation of atmospheric neutrinos Peer-reviewed

Fukuda, Y., Hayakawa, T., Ichihara, E., Inoue, K., Ishihara, K., Ishino, H., Itow, Y., Kajita, T., Kameda, J., Kasuga, S., Kobayashi, K., Kobayashi, Y., Koshio, Y., Miura, M., Nakahata, M., Nakayama, S., Okada, A., Okumura, K., Sakurai, N., Shiozawa, M., Suzuki, Y., Takeuchi, Y., Totsuka, Y., Yamada, S., Earl, M., Habig, Alec, Kearns, E., Messier, M.D., Scholberg, K., Stone, J.L., Sulak, L.R., Walter, C.W., Goldhaber, M., Barszczak, T., Casper, D., Gajewski, W., Halverson, P.G., Hsu, J., Kropp, W.R., Price, L.R., Reines, F., Smy, M., Sobel, H.W., Vagins, M.R., Ganezer, K.S., Keig, W.E., Ellsworth, R.W., Tasaka, S., Flanagan, J.W., Kibayashi, A., Learned, J.G., Matsuno, S., Stenger, V.J., Takemori, D., Ishii, T., Kanzaki, J., Kobayashi, T., Mine, S., Nakamura, K., Nishikawa, K., Oyama, Y., Sakai, A., Sakuda, M., Sasaki, Osamu, Echigo, S., Kohama, M., Suzuki, A.T., Haines, T.J., Blaufuss, E., Kim, B.K., Sanford, R., Svoboda, R., Chen, M.L., Conner, Z., Goodman, J.A., Sullivan, G.W., Hill, J., Jung, C.K., Martens, K., Mauger, C., McGrew, C., Sharkey, E., Viren, B., Yanagisawa, C., Doki, W., Miyano, K., Okazawa, H., Saji, C., Takahata, M., Nagashima, Y., Takita, M., Yamaguchi, T., Yoshida, M., Kim, S.B., Etoh, M., Fujita, K., Hasegawa, A., Hasegawa, T., Hatakeyama, S., Iwamoto, T., Koga, M., Maruyama, T., Ogawa, H., Shirai, J., Suzuki, A., Tsushima, F., Koshiba, M., Nemoto, M., Nishijima, K., Futagami, T., Hayato, Y., Kanaya, Y., Kaneyuki, K., Watanabe, Y., Kielczewska, D., Doyle, R.A., George, J.S., Stachyra, A.L., Wai, L.L., Wilkes, R.J., Young, K.K.

Phys.Rev.Lett.　81　(8)　1562-1567　1998

DOI： 10.1103/PhysRevLett.81.1562 　
A study on the e/μ identification capability of a water Cerenkov detector and the atmospheric neutrino problem Peer-reviewed

S. Kasuga, T. Hayakawa, S. Joukou, T. Kajita, Y. Koshio, T. Kumita, K. Matsumoto, M. Nakahata, A. Sakai, M. Shiozawa, Y. Suzuki, Y. Totsuka, K. S. Hirata, K. Kihara, Y. Oyama, O. Sasaki, A. T. Suzuki, T. Ishizuka, K. Miyano, H. Okazawa, K. Nishikawa, K. Fujita, M. Koga, A. Suzuki

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics　374　(1-3)　238-242　1996/05/02
Publisher: Elsevier
DOI： 10.1016/0370-2693(96)00138-4 　

ISSN： 0370-2693
Search for neutralino dark matter heavier than theWboson at Kamiokande

M. Mori, M. M. Nojiri, K. S. Hirata, K. Kihara, Y. Oyama, A. Suzuki, K. Takahashi, M. Yamada, H. Takei, M. Koga, K. Miyano, H. Miyata, Y. Fukuda, T. Hayakawa, K. Inoue, T. Ishida, T. Kajita, Y. Koshio, M. Nakahata, K. Nakamura, A. Sakai, N. Sato, M. Shiozawa, J. Suzuki, Y. Suzuki, Y. Totsuka, M. Koshiba, K. Nishijima, T. Kajimura, T. Suda, A. T. Suzuki, T. Hara, Y. Nagashima, M. Takita, H. Yokoyama, A. Yoshimoto, K. Kaneyuki, Y. Takeuchi, T. Tanimori, S. Tasaka, K. Nishikawa

Physical Review D　48　(12)　5505-5518　1993/12/15
Publisher: American Physical Society (APS)
DOI： 10.1103/physrevd.48.5505 　

ISSN： 0556-2821

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Current status of PICOLON darkmatter seach using high-prity NaI(Tl) crystals

小寺健太, 伏見賢一, CHERNYAK D., 江尻宏泰, 畑和実, 硲隆太, 飯田崇史, 池田晴雄, 今川恭四郎, 井上邦雄, 伊藤博士, 岸本忠史, 古賀真之, KOZLOV A., 中村健悟, 中村健悟, 折戸玲子, 嶋達志, 竹本康浩, 竹本康浩, 梅原さおり, 浦野雄介, 浦野雄介, 山本祐平, 保田賢輔, 吉田斉

日本物理学会講演概要集(CD-ROM)　79　(2)　2024

ISSN： 2189-079X
Crystal growth of high-purity NaI(Tl)

伏見賢一, Chernyak D., 江尻宏泰, 畑和実, 硲隆太, 飯田崇史, 池田晴雄, 今川恭四郎, 井上邦雄, 井上邦雄, 伊藤博士, 岸本忠史, 古賀真之, 古賀真之, 小寺健太, Kozlov A., 中村健悟, 中村健悟, 折戸玲子, 嶋達志, 竹本康浩, 竹本康浩, 梅原さおり, 浦野雄介, 山本祐平, 保田賢輔, 吉田斉

日本結晶成長学会誌(CD-ROM)　49　(4)　2023

ISSN： 2188-7268
Rare process in particle- and astro-physics investigated by ultrapure inorganic crystal scintillators

伏見賢一, 小寺健太, 折戸玲子, 浦野雄介, CHERNYAK Dmitry, 江尻宏泰, 岸本忠史, 嶋達志, 梅原さおり, 吉田斉, 畑和実, 池田晴雄, 井上邦雄, 古賀真之, 黒澤俊介, 硲隆太, 飯田崇史, 今川恭四郎, 保田賢輔, 伊藤博士, KOZLOV Alexandre, 中村健悟, 竹本康浩

日本セラミックス協会秋季シンポジウム講演予稿集(Web)　35th　2022
高純度NaI(Tl)検出器のバックグラウンド測定 2

小寺健太, 伏見賢一, CHERNYAK D., 江尻宏泰, 畑和実, 硲隆太, 飯田崇史, 池田晴雄, 今川恭四郎, 井上邦雄, 石浦宏尚, 伊藤博士, 岸本忠史, 古賀真之, KOZLOV A., 中村健悟, 中村健悟, 折戸玲子, 嶋達志, 竹本康浩, 竹本康浩, 梅原さおり, 浦野雄介, 保田賢輔, 吉田斉

日本物理学会講演概要集(CD-ROM)　77　(2)　2022

ISSN： 2189-079X
Hyper-Kamiokande Design Report

Hyper-Kamiokande Proto-Collaboration, K. Abe

arXiv.org　(1805.04163)　2018/11
Search for Majorana Neutrinos Near the Inverted Mass Hierarchy Region with KamLAND-Zen (vol 117, 082503, 2016)

A. Gando, Y. Gando, T. Hachiya, A. Hayashi, S. Hayashida, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Karino, M. Koga, S. Matsuda, T. Mitsui, K. Nakamura, S. Obara, T. Oura, H. Ozaki, I. Shimizu, Y. Shirahata, J. Shirai, A. Suzuki, T. Takai, K. Tamae, Y. Teraoka, K. Ueshima, H. Watanabe, A. Kozlov, Y. Takemoto, S. Yoshida, K. Fushimi, T. I. Banks, B. E. Berger, B. K. Fujikawa, T. O'Donnell, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, M. P. Decowski

PHYSICAL REVIEW LETTERS　117　(10)　2016/09

DOI： 10.1103/PhysRevLett.117.109903 　

ISSN： 0031-9007

eISSN： 1079-7114
White paper: CeLAND - Investigation of the reactor antineutrino anomaly with an intense 144Ce-144Pr antineutrino source in KamLAND

A. Gando

(1309.6805)　2013/09

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We propose to test for short baseline neutrino oscillations, implied by the recent reevaluation of the reactor antineutrino flux and by anomalous results from the gallium solar neutrino detectors. The test will consist of producing a 75 kCi 144Ce - 144Pr antineutrino source to be deployed in the Kamioka Liquid Scintillator Anti-Neutrino Detector (KamLAND). KamLAND's 13m diameter target volume provides a suitable environment to measure energy and position dependence of the detected neutrino flux. A characteristic oscillation pattern would be visible for a baseline of about 10 m or less, providing a very clean signal of neutrino disappearance into a yet-unknown, "sterile" state. Such a measurement will be free of any reactor-related uncertainties. After 1.5 years of data taking the Reactor Antineutrino Anomaly parameter space will be tested at > 95% C.L.
High Sensitivity Search for ν̄<inf>e</inf>'s from the Sun and Other Sources at KamLAND

K. Eguchi, S. Enomoto, K. Furuno, H. Ikeda, K. Ikeda, K. Inoue, K. Ishihara, Iwamoto, T. Kawashima, Y. Kishimoto, M. Koga, Y. Koseki, T. Maeda, T. Mitsui, M. Motoki, K. Nakajima, H. Ogawa, K. Owada, F. Piquemal, I. Shimizu, J. Shirai, F. Suekane, A. Suzuki, K. Tada, O. Tajima, T. Takayama, K. Tamae, H. Watanabe, J. Busenitz, Z. Djurcic, K. McKinny, D. M. Mei, A. Piepke, E. Yakushev, B. E. Berger, Y. D. Chan, M. P. Decowski, D. A. Dwyer, S. J. Freedman, Y. Fu, B. K. Fujikawa, J. Goldman, K. M. Heeger, K. T. Lesko, K. B. Luk, H. Murayama, D. R. Nygren, C. E. Okada, A. W.P. Poon, H. M. Steiner, L. A. Winslow, G. A. Horton-Smith, C. Mauger, R. D. McKeown, B. Tipton, P. Vogel, C. E. Lane, T. Miletic, P. W. Gorham, G. Guillian, J. G. Learned, J. Maricic, S. Matsuno, S. Pakvasa, S. Dazeley, S. Hatakeyama, R. Svoboda, B. D. Dieterle, M. DiMauro, J. Detwiler, G. Gratta, K. Ishii, N. Tolich, Y. Uchida, M. Batygov, W. Bugg, Y. Efremenko, Y. Kamyshkov, A. Kozlov, Y. Nakamura, C. R. Gould, H. J. Karwowski, D. M. Markoff, J. A. Messimore, K. Nakamura, R. M. Rohm, W. Tornow, A. R. Young, M. J. Chen, Y. F. Wang

Physical Review Letters　92　713011-713015　2004/02/20

ISSN： 0031-9007
Recent status of the KamLAND experiment

F. Suekane, K. Eguchi, S. Enomoto, K. Furuno, Y. Gando, J. Goldman, H. Hanada, H. Ikeda, K. Ikeda, K. Inoue, K. Ishihara, T. Iwamoto, T. Kawashima, Y. Kishimoto, M. Koga, Y. Koseki, T. Maeda, T. Mitsui, M. Motoki, K. Nakajima, M. Nakajima, T. Nakajima, H. Ogawa, K. Oki, K. Owada, I. Shimizu, J. Shirai, F. Suekane, A. Suzuki, K. Tada, O. Tajima, T. Takayama, K. Tamae, H. Watanabe, T. Taniguchi, Y. F. Wang, J. Busenitz, Z. Djurcic, K. McKinny, D. M. Mei, A. Piepke, E. Yakushev, B. Berger, R. N. Cahn, Y. D. Chan, X. Chen, S. J. Freedman, B. K. Fujikawa, K. T. Lesko, K. B. Luk, H. Murayama, D. R. Nygren, C. E. Okada, A. W. Poon, H. M. Steiner, L. Hannelius, G. A. Horton-Smith, R. D. McKeown, J. Ritter, B. Tipton, P. Vogel, C. E. Lane, P. Gorham, J. Learned, J. Maricic, S. Matsuno, S. Pakvasa, S. Dazeley, S. Hatakeyama, R. C. Svoboda, B. D. Dieterle, C. Gregory, J. Detwiler, G. Gratta, H. L. Liew, D. Murphree, N. Tolich, Y. Uchida, M. Batygov, S. Berridge, W. Bugg, H. Cohn, Y. Efremenko, Y. Kamyshkov, Y. Nakamura, L. DeBraeckeleer, C. Gould, H. Karwowski, D. Markoff, J. Messimore, K. Nakamura, R. Rohm, W. Tornow, A. Young

Nuclear Physics B - Proceedings Supplements　112　128-132　2002/11/01

ISSN： 0920-5632
1000t liquid scintillator detector to approach the neutrino puzzle.

古賀真之

放射線　25　(4)　17-24　1999/10
Publisher: 応用物理学会,放射線分科会
ISSN： 0285-3604
ニュートリノの謎に迫る1000トン液体シンチレーター検出器の建設

古賀真之

応用物理学関係連合講演会講演予稿集　46th　(0)　41　1999/03/28
Large-scale anisotropy of the cosmic-ray muon flux in Kamiokande

K Munakata, T Kiuchi, S Yasue, C Kato, S Mori, KS Hirata, K Kihara, Y Oyama, M Mori, K Fujita, S Hatakeyama, M Koga, T Maruyama, A Suzuki, T Ishizuka, K Miyano, H Okazawa, Y Fukuda, T Hayakawa, K Inoue, K Ishihara, H Ishino, S Joukou, T Kajita, S Kasuga, Y Koshio, T Kumita, K Matsumoto, M Nakahata, K Nakamura, K Okumura, A Sakai, M Shiozawa, J Suzuki, Y Suzuki, T Tomoeda, Y Totsuka, T Horiuchi, K Nishijima, M Koshiba, T Suda, AT Suzuki, T Hara, Y Nagashima, M Takita, T Yamaguchi, Y Hayato, K Kaneyuki, T Suzuki, Y Takeuchi, T Tanimori, S Tasaka, E Ichihara, S Miyamoto, K Nishikawa

PHYSICAL REVIEW D　56　(1)　23-26　1997/07

DOI： 10.1103/PhysRevD.56.23 　

ISSN： 0556-2821

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Presentations 10

KamLAND-Zen 800 status and future prospects International-presentation Invited

KOGA Masayuki

ICNFP2017　2017/08/22
KamLAND-Zen International-presentation Invited

KOGA Masayuki

2017 Tamura symposium　2017/05/08
KamLAND-Zen double beta decay experiment

Windows on the Universe　2013/08/12
KamLAND-Zen double beta decay experiment

International Symposium on Neutrino Physics and Beyond　2012/09/23
KamLAND experience International-presentation

Advances in Neutrino Technology　2011/10/10
KamLAND double beta experiment using 136Xe International-presentation

ICHEP2010　2010/07/22
The future project of KamLAND International-presentation

Workshop on Xenon-Based Detectors　2009/11/16
Rn-reduced air - electrostatic International-presentation

Low Radioactivity Techniques 2004　2004/12/12
Evidence for Reactor Anti-Neutrino Disappearance on KamLAND International-presentation

2003 International Symposium on Cosmology and Particle Astrophysics　2003/11/13
Detection of reactor and solar neutrinos in KamLAND International-presentation

The 2nd International Conference on Flavor Physics　2003/10/06

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Research Projects 7

136Xeを用いたニュートリノレス二重ベータ崩壊事象の探索 Competitive

System: Ordinary Research

2009/04 - Present
Study of Neutrino Deficit Problem on KamLAND Experiment Competitive

1998/04 - Present
Study of Majorana Neutrino Mass with High Luminance Liquid Scintillator Detector

Shimizu Itaru, KOGA MASAYUKI, IKEDA HARUO, GANDO AZUSA

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (B)

Institution: Tohoku University

2015/04/01 - 2018/03/31

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The development of a liquid scintillator detector to search for the Majorana neutrino mass was performed. We found that molecular sieve and activated charcoal are effective to remove light absorbing materials in the liquid scintillator, resulting in improved performance. The increase of the light output and transparency of the scintillator will enhance the detector performance. The present study enables us to reduce the cost of constructing a large detector and increases the chance of observing the Majorana neutrino mass with a liquid scintillator detector.
High Precision and High Sensitivity Measurements of Electron Anti-Neutrinos from Reactors and inside the Earth, and Electron Neutrinos from the Sun

SUZUKI Atsuto, INOUE Kunio, SHIRAI Junpei, KOGA Masayuki, MITSUI Tadao, KISHIMOTO Yasuhiro

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Specially Promoted Research

Institution: Tohoku University

2004 - 2008
KamLANDにおける7Be太陽ニュートリノ検出の為の極低濃度放射性不純物除去システムの開発研究 Competitive

System: Grant-in-Aid for Scientific Research

2005/04 - 2007/03
大型液体シンチレーター実験装置における放射線バックグラウンド事象の研究

古賀真之

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 若手研究(B)

Institution: 東北大学

2002 - 2003

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昨年度に大型液体シンチレーター検出器であるカムランド実験装置本体でのバックグラウンド事象の研究を行い、当初に遅延同時計数を用いた原子炉反電子ニユートリノの検出における主なバッググラウンドとなると予想された^<238>Uの存在量は(3.5+-0.5)×10^<-18>g/g、^<232>Thの場合は(5.2+-0.8)×10^<-17>g/gと無視できる量であることが求められた。本年度は、次の目標である^7Be太陽ニュートリノの検出では単事象でのバックグラウンドも考慮しなげればならないことから、その起源となるおそれのある気中および液体シンチレーター中に存在するRnの量を測定するための検出器の研究を行った。開発する検出器は静電捕集型であり、その容器は検出器内で発生するRnの量を低減させるために内面に高グレードの電解研磨処理を施してある。検出部はパッシベーション処理を施したPINフォトダイオード、腐食とノイズ低減を目的としたセラミック製フィードスルー、アンプモジュールからなっている。静電捕集法では陽イオン化しているRnの娘核種(^<218>Po,^<214>Bi)をフォトダイオード周辺に収集し崩壊によって生じるα線を計測することから、予め最適な電場が作れる様にシミュレーシヨンにより容器の形状と接地のとり方、及び電圧値の関係を求めた。現在は、検出器の製作と放射線源を用いての装置の較正が完了しており、試験的に空気中のラドン濃度の計測を行っているとこるである。今後はどの程度の低濃度までRn検出が可能であるかを評価した上で、検出器の改良に取り組んでいく予定である。具体的には、検出器内で発生するRnの更なる低減化、冷却捕獲によるRn濃縮方法の確立、有機液体への応用を進める。
Research for Neutrino in the Ultra Low-Background Environment

SUZUKI Atsuto, INOUE Kunio, SUEKANE Fumihiko, SHIRAI Junpei, KOGA Masayuki

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for COE Research

Institution: Tohoku University

1997 - 2003

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The KamLAND experiment which is led by the head investigator, completed the construction of 1000ton liquid scintillator neutrino/anti-neutrino detector in the Kamioka mine in the year 2001. This project is supported by the Center of Excellence program (1997-2003). The experiment has been taking data since January, 2002. In December 2002, the experiment found a large deficit of anti-neutrinos from reactors for the first time. The result strongly supports the existence of neutrino oscillations, which is caused by the finite mass of the neutrinos. The paper (Phys. Rev. Lett. 90, 021802, 2003) has been giving a strong impact on the elementary particle physics and has been cited by 537 papers so far. According to the Thomson ISI Web of Science data, shown in the latest (March/April, 2004) issue of 'Science Watch' magazine, this paper ranks the top score among the physics papers and 2nd score among the scientific papers, regarding the monthly most cited papers. The definite evidence of the oscillation will be published next paper in July. The experiment is now challenging to measure anti-neutrinos coming from the earth by identifying uranium and thorium peaks in the energy spectrum. The performance of the detector has been evaluated to be sufficient to detect such neutrinos and the successful detection is anticipated. If the measurement is performed, the amount of uranium and thorium in the earth and its ratio will be obtained, which is inevitable information to study the origin of heat generation in the earth and evolution of the geological history of the earth. The KamLAND experiment is now planning lo improve the detector sensitivity to detect solar ^7Be neutrinos for the first time.

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奈良県立青翔中学

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カムランド施設見学対応と事前講義。
「夢のたまご塾」飛騨アカデミー２０11夏セミナー

2011/08/05 -

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カムランド施設見学の案内
SSH新潟県立新潟南高校

2011/08/04 -

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カムランド施設見学対応と事前講義。
SSH新潟県立柏崎高校

2011/08/02 -

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カムランド施設見学対応と事前講義。
SSH静岡理工科大学静岡北高校

2011/04/21 -

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カムランド施設見学対応と事前講義。
飛騨アカデミー夢のたまご

2009/08/07 -

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国内各地から集まった高校生を対象に「地球ニュートリノとカムランド」について講義を行う。
中学生サイエンスキャンプ

2008/08/11 -

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岐阜県内の中学生を対象に「ニュートリノ振動」および「地球ニュートリノ」について講義を行う。
「夢のたまご塾」飛騨アカデミー２００７夏セミナー

2007/08/10 -

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「地球物理学とカムランド」のタイトルで90分の講義、及びカムランド施設見学の案内
「中学生のためのサイエンスキャンプ」岐阜県先端科学技術体験センターサイエンスワールド主催

2006/08/03 -

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「カムランドの紹介」のタイトルで90分の講義、及びカムランド施設見学の案内

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Media Coverage 3

別冊アサ秘ジャーナル

TBS

2014/12/21

Type: TV or radio program

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東北大学特集に関連して、神岡実験施設の説明を行った。
放送大学科目「宇宙とその進化」

放送大学

2014/04/17

Type: TV or radio program

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放送大学科目「宇宙とその進化」の第３回「電磁波以外の手段による宇宙の観測」でカムランド実験を取り上げていただき、実験装置について説明を行った。
優良事業所紹介

岐阜県危険物安全会報

2007/07/31

Type: Other

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理学研究科附属ニュートリノ科学研究センターカムランド実験施設が優良事業所表彰を受けたことに伴う機関紙への紹介記事提供。主としてカムランド実験施設の紹介。