γ辐射场中TEPC微剂量谱的测量与模拟

组织等效正比计数器（TEPC）所测中子、γ辐射的微剂量谱体现出不同的特征，可对中子、γ混合辐射场剂量当量份额进行区分。对中子、γ辐射剂量当量分辨方法进行研究，在^60Co、^137Csγ参考辐射场测量纯丫辐射的微剂量谱。采用FLUKA程序，模拟TEPC在多个单能点γ辐射场的微剂量谱。结果表明，^60Co、^137Csγ参考辐射场测量的微剂量谱与蒙特卡罗模拟的微剂量谱均体现了γ辐射的特征即线能基本低于10keV／μm，是进行中子、γ辐射剂量当量贡献分辨的基础。...

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Bibliographic Details
Published in同位素 Vol. 26; no. 3; pp. 144 - 147
Main Author 张伟华 肖雪夫 王志强 刘毅娜 李春娟 骆海龙
Format Journal Article
LanguageChinese
Published 中国原子能科学研究院,北京,102413 2013
Subjects
FLUKA程序
γ辐射
微剂量谱
组织等效正比计数器
γ radiation
FLUKA code
微剂量谱
TEPC
γ辐射
microdosimetric spectra
组织等效正比计数器
FLUKA程序
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ISSN1000-7512
DOI10.7538/tws.2013.26.03.0144

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Summary:组织等效正比计数器（TEPC）所测中子、γ辐射的微剂量谱体现出不同的特征，可对中子、γ混合辐射场剂量当量份额进行区分。对中子、γ辐射剂量当量分辨方法进行研究，在^60Co、^137Csγ参考辐射场测量纯丫辐射的微剂量谱。采用FLUKA程序，模拟TEPC在多个单能点γ辐射场的微剂量谱。结果表明，^60Co、^137Csγ参考辐射场测量的微剂量谱与蒙特卡罗模拟的微剂量谱均体现了γ辐射的特征即线能基本低于10keV／μm，是进行中子、γ辐射剂量当量贡献分辨的基础。
Bibliography:11-2566/TL
According to the different characteristics of microdosimetric spectra measured by tissue equivalent proportional counter （TEPC）, the neutron dose equivalent and γ dose e- quivalent could be distinguished in a unknown neutron and γ mixed radiation field. In order to discriminate the γ radiation dose equivalent from the total value,the pure γmicrodosimet- ric spectra was measured in60Co, 137Cs radionuclide radiation field with TEPC. TEPC mi- crodosimetric spectra in a series of monoenergy γ radiation field were simulated by FLUKA code. All the 3＇ radiation microdosimetric spectra, including measured spectrum in 60Co, 137Cs radiation field and that of simulation spectrum by FLUKA code, reveal a trait that the linear energy of γ radiation is basically lower than 10 keV/tam. This trait is the very foun- dation to discriminate the γ radiation from the mixed radiation.
ZHANG Wei-hua,WANG Zhi-qiang,LIU Yi-na, XIAO Xue-fu, LI Chun-juan, LUO Hai-long （China Institute of Atomic Energy, Beijing 102413, China）
TEP
ISSN:1000-7512
DOI:10.7538/tws.2013.26.03.0144