検索対象:     
報告書番号:
※ 半角英数字
 年 ~ 
 年

Fast neutron detection under intense $$gamma$$-ray fields with novel nuclear emulsion technique

新型原子核乾板を用いた高$$gamma$$線バックグラウンド下での選択的高速中性子検出

石原 康平*; 高木 恵輔*; 湊 春奈*; 河原林 順*; 富田 英生*; 前田 茂貴; 中 竜大*; 森島 邦博*; 中野 敏行*; 中村 光廣*; 井口 哲夫*

Ishihara, Kohei*; Takagi, Keisuke*; Minato, Haruna*; Kawarabayashi, Jun*; Tomita, Hideki*; Maeda, Shigetaka; Naka, Tatsuhiro*; Morishima, Kunihiro*; Nakano, Toshiyuki*; Nakamura, Mitsuhiro*; Iguchi, Tetsuo*

原子核乾板を用いた高$$gamma$$線下での中性子測定に向け、新規に開発を進めている原子核乾板について$$gamma$$線に対する乾板応答シミュレーション結果と実験結果との比較により、潜像が現像されるには付与エネルギーに閾値が存在する可能性が示唆され、$$gamma$$線に対する感度を低減するためにAgBr結晶粒径微細化が有用であることがわかった。新型乾板の中性子と$$gamma$$線の感度を比較し、$$gamma$$/n比8桁で測定できる可能性を得た。

In order to measure the neutron under a condition of high intensity of $$gamma$$-ray background, we made new nuclear emulsion based on non-sensitized OPERA emulsion which had small AgBr grain size (AgBr grain size of 60, 90 and 160 nm). The sensitivity of this new emulsion, which was a correlation between stopping power and grain density, was estimated experimentally by irradiating neutrons with several energies. We also simulated the response to $$gamma$$-ray induced electrons and compared with some experimental results by using $$^{60}$$Co $$gamma$$ source. The results showed that there might be a threshold energy deposited in one AgBr grain under which it was impossible to develop. We estimated efficiency to the $$gamma$$-ray and the neutron with this obtained response of the new emulsion.

Access

:

- Accesses

InCites™

:

パーセンタイル:100

分野:Nuclear Science & Technology

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.