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Koshimizu, Masanori*; Iwamatsu, Kazuhiro*; Taguchi, Mitsumasa; Kurashima, Satoshi; Kimura, Atsushi; Yanagida, Takayuki*; Fujimoto, Yutaka*; Watanabe, Kenichi*; Asai, Keisuke*
Journal of Luminescence, 169(Part B), p.678 - 681, 2016/01
We analyzed the effects of linear energy transfer (LET) on the scintillation properties of a Li glass scintillator, GS20. The scintillation time profiles were measured by using pulsed ion beams having different LETs. The rise in the scintillation time profiles was faster for higher LET, whereas the decay part was not significantly different for largely different LETs. The LET effects in the rise was ascribed to the effects of excited states interaction during the energy transfer process from the host glass to the luminescent centers, Ce
ions. Supposing that the light yield decreases with LET, the fast rise at high LET was explained in terms of the competition between the energy transfer and the quenching due to the excited states interaction.
crystalsYanagida, Takayuki*; Koshimizu, Masanori*; Kurashima, Satoshi; Iwamatsu, Kazuhiro*; Kimura, Atsushi; Taguchi, Mitsumasa; Fujimoto, Yutaka*; Asai, Keisuke*
Nuclear Instruments and Methods in Physics Research B, 365(Part B), p.529 - 532, 2015/12
Times Cited Count：11 Percentile：64.70(Instruments & Instrumentation)We measured temporal profiles of scintillation of Ce-doped LiCaAlF scintillator crystals at different linear energy transfers (LETs). Based on the comparison of the high-LET temporal profiles with those at low LET, we found that a fast component was observed only at low LET. The disappearance of the fast component at high LET is tentatively ascribed to quenching of excited states at defects owing to the interaction between excited states via Auger process. In addition, the rise and the initial decay behavior was dependent on the LET. This LET-dependent behavior is explained by a seeming acceleration process and a slowing down process in energy transfer at high LET. The LET-dependent temporal profiles provide a basis of discrimination technique of 
-ray and neutron detection events using these scintillators based on the nuclear reaction, 
Li(n,
)t.
Koshimizu, Masanori*; Kurashima, Satoshi; Taguchi, Mitsumasa; Iwamatsu, Kazuhiro; Kimura, Atsushi; Asai, Keisuke*
Review of Scientific Instruments, 86(1), p.013101_1 - 013101_5, 2015/01
Times Cited Count：12 Percentile：46.21(Instruments & Instrumentation)We have developed a system for measuring the temporal profiles of scintillation at high linear energy transfer (LET) by using pulsed ion beams from a cyclotron. The half width at half maximum time resolution was estimated to be 1.5-2.2 ns, which we attributed mainly to the duration of the pulsed ion beam and timing jitter between the trigger signal and the arrival of the ion pulse. The temporal profiles of scintillation of BaF
at different LETs were successfully observed. These results indicate that the proposed system is a powerful tool for analyzing the LET effects in temporal profiles of scintillation.
single crystal scintillatorKoshimizu, Masanori*; Onodera, Kazuya*; Nishikido, Fumihiko*; Haruki, Rie; Shibuya, Kengo*; Kishimoto, Shunji*; Asai, Keisuke*
Journal of Applied Physics, 111(2), p.024906_1 - 024906_5, 2012/01
Times Cited Count：32 Percentile：75.20(Physics, Applied)Haruki, Rie; Shibuya, Kengo*; Nishikido, Fumihiko*; Koshimizu, Masanori*; Yoda, Yoshitaka*; Kishimoto, Shunji*
Journal of Physics; Conference Series, 217, p.012007_1 - 012007_4, 2010/05
Times Cited Count：4 Percentile：80.73(Physics, Applied)Shibuya, Kengo*; Koshimizu, Masanori*; Asai, Keisuke*; Muroya, Yusa*; Katsumura, Yosuke; Inadama, Naoko*; Yoshida, Eiji*; Nishikido, Fumihiko*; Yamaya, Taiga*; Murayama, Hideo*
Review of Scientific Instruments, 78(8), p.083303_1 - 083303_7, 2007/08
Times Cited Count：6 Percentile：31.28(Instruments & Instrumentation)Kishimoto, Shunji*; Nishikido, Fumihiko*; Haruki, Rie; Koshimizu, Masanori*
no journal, ,
no abstracts in English
Koshimizu, Masanori*; Taguchi, Mitsumasa; Kurashima, Satoshi; Asai, Keisuke*
no journal, ,
no abstracts in English
Haruki, Rie; Imai, Yasuhiko*; Yoda, Yoshitaka*; Koshimizu, Masanori*; Nishikido, Fumihiko*; Shibuya, Kengo*; Kurokuzu, Masayuki*; Kishimoto, Shunji*
no journal, ,
Haruki, Rie; Imai, Yasuhiko*; Koshimizu, Masanori*; Nishikido, Fumihiko*; Shibuya, Kengo*; Kurokuzu, Masayuki*; Yoda, Yoshitaka*; Kishimoto, Shunji*
no journal, ,
no abstracts in English
BO6 scintillatorKoshimizu, Masanori*; Fujimoto, Yutaka*; Yanagida, Takayuki*; Iwamatsu, Kazuhiro; Kimura, Atsushi; Kurashima, Satoshi; Taguchi, Mitsumasa; Asai, Keisuke*
no journal, ,
no abstracts in English
