M
Mitsuhiro Miyajima
Researcher at Waseda University
Publications - 51
Citations - 666
Mitsuhiro Miyajima is an academic researcher from Waseda University. The author has contributed to research in topics: Xenon & Scintillation. The author has an hindex of 14, co-authored 51 publications receiving 625 citations.
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Drift velocities of electrons, saturation characteristics of ionization and W-values for conversion electrons in liquid argon, liquid argon-gas mixtures and liquid xenon
TL;DR: In this article, the drift velocities of electrons, the saturation characteristics of ionization and the W -values for internal conversion electrons emitted from 207 Bi in liquid argon, liquid gas mixtures and liquid xenon have been measured by using gridded ionization chambers.
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Absolute number of photons produced by alpha-particles in liquid and gaseous xenon
TL;DR: In this paper, the number of photoelectrons from the photomultiplier photocathode was measured with a well calibrated charge sensitive amplifier system as a function of distance between the alpha-source and the photocathodes.
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Gamma-ray spectrometer (GRS) for lunar polar orbiter SELENE
Nobuyuki Hasebe,Eido Shibamura,Takashi Miyachi,Takeshi Takashima,Masanori Kobayashi,Osamu Okudaira,Naoyuki Yamashita,Shingo Kobayashi,Takeshi Ishizaki,Kunitomo Sakurai,Mitsuhiro Miyajima,Masayuki Fujii,Keisuke Narasaki,Shigeki Takai,Katsuhiro Tsurumi,Hiroshi Kaneko,Michio Nakazawa,Kunishiro Mori,Olivier Gasnault,Sylvestre Maurice,Claude d’Uston,Robert C. Reedy,Manuel Grande +22 more
TL;DR: The high-precision gamma-ray spectrometer (GRS) on the lunar polar orbiter SELENE is designed to measure 200 keV-12 MeV gamma rays in order to determine elemental compositions of the lunar surface as discussed by the authors.
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Proportional Counter Filled with Highly Purified Liquid Xenon
Mitsuhiro Miyajima,Kimiaki Masuda,A. Hitachi,Tadayoshi Doke,T. Takahashi,S. Konno,T. Hamada,Shinzou Kubota,A. Nakamoto,Eido Shibamura +9 more
TL;DR: In this paper, the electron avalanche in highly purified liquid xenon is observed with reproducible gain, and the electronegative ion pumping is effective for suppressing spurious discharges rather than for purifying liquid Xenon.
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A self-triggered liquid xenon drift chamber by the use of proportional ionization or proportional scintillation
Mitsuhiro Miyajima,Keisuke Masuda,Y. Hoshi,Tadayoshi Doke,T. Takahashi,T. Hamada,S. Kubota,A. Nakamoto,Eido Shibamura +8 more
TL;DR: In this article, a liquid xenon drift chamber with an electron drift space of 13 mm in length has been constructed and the spatial resolution of the drift chamber was investigated by using alpha particles.