M. Miyajima
Rikkyo University
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Featured researches published by M. Miyajima.
Nuclear Physics | 1965
Iwao Ogawa; Tadayoshi Doke; M. Miyajima; A. Nakamoto
Abstract The alpha particle energy and the half-life of Gd150 have been measured with a double-grid ionization chamber. Backgrounds are minimized by the grid-collector coincidence technique. The alpha particle energy is determined as 2.715±0.018 MeV by referring to that of Sm147 (Eα = 2.23±0.02 MeV) reported by Macfarlane. The half-life is estimated to be (1.4±0.4)×106 y from the observed counting rate and the total number of Gd150 nuclei contained in the specimen. The number is estimated from the observed beta-decay rate of the parent nuclei Eu150, which are produced by a photonuclear reaction Eu151(γ, n)Eu150. The experimental half-life thus obtained agrees within a factor of 4.4 with the theoretical half-life calculated from the observed alpha-particle energy on the basis of a conventional barrier-penetration theory. The results show that Gd150 behaves quite normally in the systematics of rare-earth alpha-decay.
Archive | 2004
Naoyuki Yamashita; Nobuyuki Hasebe; Masanori Kobayashi; Takashi Miyachi; M. Miyajima; Osamu Okudaira; Alexey A. Berezhnoy; Eido Shibamura
Proceedings of International Symposium on Radiation Detectors and Their Uses (ISRD2016) | 2016
Kenta Iwasaki; Naomichi Tanaka; Kohei Murakami; Hiroki Kusano; Eido Shibamura; Nobuyuki Hasebe; M. Miyajima
26th Workshop on Radiation Detectors and Their Uses | 2012
Hiroki Kusano; M. Miyajima; Nobuyuki Hasebe
Archive | 2008
S. Torii; Osamu Okudaira; S. Kodaira; Yoji Shimizu; Nobuyuki Hasebe; Makoto Hareyama; M. Miyajima; Takashi Miyachi; N. Yamasihta; Satoshi Ueno; Yuika Saito; Masahiro Takayanagi; Hiroshi Tomida; Jun Nishimura; Hideyuki Fuke; Takamasa Yamagami; S.Okuno S.Okuno; N. Tateyama; Takayuki Tamura; K. Hibino; S. Shiomi; M. Takita; T. Yuda; F. Kakimoto; Y. Tsunesada; Toshio Terasawa; Takeyuki Kobayashi; Atsumasa Yoshida; Kazutaka Yamaoka; Y. Katayose
22nd Workshop on Radiation Detectors and Their Uses | 2008
M. Mmura; Shingo Kobayashi; S. Asano; Naoki Masuyama; M. Miyajima; Nobuyuki Hasebe
22nd Workshop on Radiation Detectors and Their Uses | 2008
Hiroki Kusano; Shingo Kobayashi; M. Mimura; S. Kobayashi; M. Miyajima; Nobuyuki Hasebe
Archive | 2007
S. Torii; Osamu Okudaira; Satoshi Kodaira; Y. Shimizu; Nobuyuki Hasebe; Makoto Hareyama; M. Miyajima; Takashi Miyachi; Naoyuki Yamashita; Shiro Ueno; 鳥居 祥二; 奥平 修; 小平 聡; 清水 雄輝; 長谷部 信行; 晴山 慎; 宮島 光弘; 宮地 孝; 山下 直之; 上野 史郎
30th International Cosmic Ray Conference, ICRC 2007 | 2007
Nobuyuki Hasebe; T. Doke; Makoto Hareyama; S. Kodaira; Takashi Miyachi; M. Miyajima; Osamu Okudaira; Kunitomo Sakurai; S. Ota; Masanori Sato; Y. Shimizu; M. Takano; S. Torii; Naoyuki Yamashita; N. Yasuda; Shogo Nakamura; T. Kamei; Hiroko Tawara; K. Ogura; S. Mikado; H. Shibuya; K. Nakazawa; Andrew J. Westphal
Archive | 2006
Masayasu Mimura; Shingo Kobayashi; C. Tezuka; T. Hosojima; Naoyuki Yamashita; M. Miyajima; Takashi Miyachi; Nobuyuki Hasebe
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