Measurement of fast neutrons with 238U-coated fission chamber
Measurement of fast neutrons with 238U-coated fission chamber
复制标题
用238U涂层裂变室测量快中子
DOI：
10.1007/s41605-019-0115-1
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发表时间：
2019-05
影响因子：
0.6
通讯作者：
Xiaohua Yuan
中科院分区：
文献类型：
--
作者：
Yuanfan Guan;Herun Yang;Limin Duan;Junwei Zhang;Xiaohua Yuan
本文介绍了一种用于快中子测量的双层238U裂变材料裂变室。方法用60 Co γ源和252 Cf中子源对研制的裂变室进行了测试。结果表明，当裂变室工作在脉冲模式下时，用屏蔽罩很容易将中子和γ射线屏蔽掉。即使使用静态空气作为填充气体，检测器也能正常工作。结论为探讨探测器的应用，对位于溅射靶外的4个. 238U包层裂变室进行了蒙特卡罗模拟计算。模拟结果表明，该探测器可用于测量四个裂变室的快中子注量率和中子注量率比。此外，与235U涂覆的裂变室相比，238U涂覆的裂变室可以在反应堆内使用更长的时间。
A fission chamber with two layers of 238U fissile materials has been developed for the measurements of fast neutrons..Methods The developed fission chamber has been tested by 60Co gamma source and 252Cf neutron source..Results The results have indicated that it is very easy to cut off the gamma rays from the neutrons by using a discriminator,.when the fission chamber works in the pulse mode. The detector works well, even if the static air is used as the filling gas..Conclusion To discuss the application of the detector, Monte Carlo simulations have been performed by considering four.238U-coated fission chambers located outside the spallation target for the fast neutron measurement from spallation reaction..The simulation results have indicated that the detector can be used to measure the fast neutron flux and neutron flux ratio of.four fission chambers. Furthermore, a 238U-coated fission chamber can be used within a reactor for longer time, in comparison.with a 235U-coated fission chamber.
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影响因子：
3.6
作者：
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通讯作者：
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DOI：
10.1016/j.nima.2006.06.067
发表时间：
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影响因子：
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影响因子：
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影响因子：
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