Matthiä Daniel, Sihver Lembit, Meier Matthias
German Aerospace Center, Institute of Aerospace Medicine, Porz-Wahnheide, Linder Höhe, 51147 Köln, Germany.
Radiat Prot Dosimetry. 2008;131(2):222-8. doi: 10.1093/rpd/ncn130. Epub 2008 Apr 30.
Monitoring of radiation exposure of aircrew is a legal requirement for many airlines in the EU and a challenging task in dosimetry. Monte-Carlo simulations of cosmic particles in the atmosphere can contribute to the understanding of the corresponding radiation field. Calculations of secondary neutron fluences in the atmosphere produced by galactic cosmic rays together with the resulting neutron-effective dose rates are shown in this paper and compared with results from the AIR project. The PLANETOCOSMICS package based on GEANT4 and two models for the local interstellar spectra of galactic cosmic rays have been used for the calculations. Furthermore, secondary muon fluences have been computed and are compared with CAPRICE measurements.
对欧盟许多航空公司而言，监测机组人员的辐射暴露是一项法律要求，也是剂量测定中的一项具有挑战性的任务。大气中宇宙粒子的蒙特卡罗模拟有助于理解相应的辐射场。本文展示了银河宇宙射线在大气中产生的次级中子注量的计算结果以及由此产生的中子有效剂量率，并与AIR项目的结果进行了比较。基于GEANT4的PLANETOCOSMICS软件包以及银河宇宙射线局部星际光谱的两种模型已用于这些计算。此外，还计算了次级μ子注量，并与CAPRICE测量结果进行了比较。
