Gamage K A A, Joyce M J
Engineering Department, Lancaster University, Lancaster LA1 4YR, UK.
Appl Radiat Isot. 2011 Oct;69(10):1521-32. doi: 10.1016/j.apradiso.2011.06.010. Epub 2011 Jun 22.
A novel analytical approach is described that accounts for self-shielding of γ radiation in decommissioning scenarios. The approach is developed with plutonium-239, cobalt-60 and caesium-137 as examples; stainless steel and concrete have been chosen as the media for cobalt-60 and caesium-137, respectively. The analytical methods have been compared MCNPX 2.6.0 simulations. A simple, linear correction factor relates the analytical results and the simulated estimates. This has the potential to greatly simplify the estimation of self-shielding effects in decommissioning activities.
描述了一种新的分析方法，该方法考虑了退役场景中γ辐射的自屏蔽。以钚-239、钴-60和铯-137为例开发了该方法；分别选择不锈钢和混凝土作为钴-60和铯-137的介质。将分析方法与MCNPX 2.6.0模拟进行了比较。一个简单的线性校正因子将分析结果与模拟估计值联系起来。这有可能极大地简化退役活动中自屏蔽效应的估计。
