宽能区中子雷姆仪结构研究

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Study on Structure of Wide Energy Range Neutron Rem Counter

College of Nuclear Science and Technology, Harbin Engineering University, Harbin, 150001, China

摘要: 应用MCNP和FLUKA程序,对不同结构宽能区中子雷姆仪的能量响应进行计算,并将计算结果与国际辐射防护委员会(ICRP)推荐的响应曲线进行了比较分析。计算结果表明:在普通A-B中子雷姆仪结构中加入铅层,能够极大地提高其对高能中子的能量响应,铅层布置和厚度的不同对中子雷姆仪的能量响应有一定的影响。铅层单层布置结构形式雷姆仪的能量响应好于双层布置。铅层加在内层厚度为0.4 cm时,雷姆仪的能量响应曲线与ICRP推荐的标准曲线符合较好。
- 宽能区 /
- 中子雷姆仪 /
- 结构 /
- 能量响应
Abstract: The energy response of the wide energy range neutron rem counter was calculated using the MCNP and FLUKA code,when the structure was changed.The result was compared with the standard curve of ICRP.The calculation results show that the energy response of conventional A-B neutron rem counter was improved greatly as a result of joining lead layer,which was affected by collocation and thickness of lead layer.The energy response of rem counter with single lead layer is better than the double layers.The energy response curve of rem counter agrees wellwith the standard curve of ICRP when the collocation of the lead layer is inside of rem counter and its thickness is 0.4cm.
- Wide energy range /
- Neutron rem counter /
- Structure /
- Energy response