Vanaudenhove T, Dubus A, Pauly N
Service de Métrologie Nucléaire (CP 165/84), Université Libre de Bruxelles, 50 av. F.D. Roosevelt, B-1050 Brussels, Belgium.
Radiat Prot Dosimetry. 2013;154(3):340-5. doi: 10.1093/rpd/ncs240. Epub 2012 Sep 12.
The WENDI-II rem meter is one of the most popular neutron dosemeters used to assess a useful quantity of radiation protection, namely the ambient dose equivalent. This is due to its high sensitivity and its energy response that approximately follows the conversion function between neutron fluence and ambient dose equivalent in the range of thermal to 5 GeV. The simulation of the WENDI-II response function with the Geant4 toolkit is then perfectly suited to compare low- and high-energy hadronic models provided by this Monte Carlo code. The results showed that the thermal treatment of hydrogen in polyethylene for neutron <4 eV has a great influence over the whole detector range. Above 19 MeV, both Bertini Cascade and Binary Cascade models show a good correlation with the results found in the literature, while low-energy parameterised models are not suitable for this application.
WENDI-II rem测量仪是用于评估辐射防护有用量（即环境剂量当量）的最常用中子剂量计之一。这归因于其高灵敏度以及在热中子到5 GeV能量范围内大致遵循中子注量与环境剂量当量之间转换函数的能量响应。然后，使用Geant4工具包对WENDI-II响应函数进行模拟，非常适合比较此蒙特卡罗代码提供的低能和高能强子模型。结果表明，对于能量小于4 eV的中子，聚乙烯中氢的热处理在整个探测器范围内都有很大影响。在19 MeV以上，Bertini级联模型和二元级联模型均与文献中的结果显示出良好的相关性，而低能参数化模型不适用于此应用。
