Dian E, Kanaki K, Hall-Wilton R J, Zagyvai P, Czifrus Sz
Hungarian Academy of Sciences, Centre for Energy Research, 1525 Budapest 114., P.O. Box 49., Hungary; European Spallation Source ESS ERIC, P.O Box 176, SE-221 00 Lund, Sweden; Budapest University of Technology and Economics, Institute of Nuclear Techniques, Műegyetem rakpart 9, 1111 Budapest, Hungary.
European Spallation Source ESS ERIC, P.O Box 176, SE-221 00 Lund, Sweden.
Appl Radiat Isot. 2017 Oct;128:275-286. doi: 10.1016/j.apradiso.2017.06.003. Epub 2017 Jun 7.
Monte Carlo simulations using MCNP6.1 were performed to study the effect of neutron activation in Ar/CO neutron detector counting gas. A general MCNP model was built and validated with simple analytical calculations. Simulations and calculations agree that only the Ar activation can have a considerable effect. It was shown that neither the prompt gamma intensity from the Ar neutron capture nor the produced Ar activity have an impact in terms of gamma dose rate around the detector and background level.
使用MCNP6.1进行了蒙特卡罗模拟，以研究氩/一氧化碳中子探测器计数气体中的中子活化效应。构建了一个通用的MCNP模型，并通过简单的解析计算进行了验证。模拟和计算结果一致表明，只有氩的活化会产生显著影响。结果表明，氩中子俘获产生的瞬发伽马射线强度和产生的氩放射性，对探测器周围的伽马剂量率和本底水平均无影响。
