A design study of application of the CsI self-activation method to the neutron rem-counter technique

Taishi Ueki, Akihiro Nohtomi, Genichiro Wakabayashi, Junichi Fukunaga, Toyoyuki Kato, S. Ohga

研究成果: ジャーナルへの寄稿記事

抄録

A design study of application of the CsI self-activation method to the “neutron rem-counter technique” was investigated. A CsI crystal served as both the main target material and 4π counter of neutron activation method in our proposed CsI self-activation method. A commercially available CsI gamma-ray dosimeter was selected as the neutron detector and surrounded with several neutron filters made of polyethylene and silicon rubber containing B4C. The geometric structure of these neutron filters was optimized by a Monte Carlo calculation to make the neutron response similar to the ICRP-74 rem-response. Optimization of this method, the residual sum of squares (RSS) of the calculated neutron response and the ICRP-74 rem-response were minimized by changing the thickness of each filter sequentially. In addition, experimental verification using a Pu–Be source and photoneutrons from a 10 MV-X medical linac has been conducted. From these results, it is concluded that it may be practical for evaluating neutron ambient dose-equivalent simply around medical linacs.

元の言語英語
記事番号106181
ジャーナルRadiation Measurements
128
DOI
出版物ステータス出版済み - 9 2019

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neutron counters
Neutrons
Chemical activation
activation
neutrons
filters
photoneutrons
Neutron detectors
Dosimeters
rubber
dosimeters
polyethylenes
Gamma rays
counters
Polyethylenes
gamma rays
Rubber
dosage
optimization
Silicon

All Science Journal Classification (ASJC) codes

  • Radiation
  • Instrumentation

これを引用

A design study of application of the CsI self-activation method to the neutron rem-counter technique. / Ueki, Taishi; Nohtomi, Akihiro; Wakabayashi, Genichiro; Fukunaga, Junichi; Kato, Toyoyuki; Ohga, S.

:: Radiation Measurements, 巻 128, 106181, 09.2019.

研究成果: ジャーナルへの寄稿記事

Ueki, Taishi ; Nohtomi, Akihiro ; Wakabayashi, Genichiro ; Fukunaga, Junichi ; Kato, Toyoyuki ; Ohga, S. / A design study of application of the CsI self-activation method to the neutron rem-counter technique. :: Radiation Measurements. 2019 ; 巻 128.
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