German Aerospace Center, Institute of Aerospace Medicine, Linder Höhe, 51147 Cologne, Germany.
German Aerospace Center, Institute of Aerospace Medicine, Linder Höhe, 51147 Cologne, Germany.
Life Sci Space Res (Amst). 2017 Aug;14:57-63. doi: 10.1016/j.lssr.2017.03.005. Epub 2017 Apr 1.
Galactic cosmic radiation and secondary particles produced in the interaction with the atmosphere lead to a complex radiation field on the Martian surface. A workshop ("1st Mars Space Radiation Modeling Workshop") organized by the MSL-RAD science team was held in June 2016 in Boulder with the goal to compare models capable to predict this radiation field with each other and measurements from the RAD instrument onboard the curiosity rover taken between November 15, 2015 and January 15, 2016. In this work the results of PLANETOCOSMICS/GEANT4 contributed to the workshop are presented. Calculated secondary particle spectra on the Martian surface are investigated and the radiation field's directionality of the different particles in dependence on the energy is discussed. Omnidirectional particle fluxes are used in combination with fluence to dose conversion factors to calculate absorbed dose rates and dose equivalent rates in a slab of tissue.
银河宇宙辐射和与大气相互作用产生的次级粒子在火星表面形成了一个复杂的辐射场。MSL-RAD 科学团队于 2016 年 6 月在博尔德举办了一次研讨会（“第一届火星空间辐射建模研讨会”），旨在相互比较能够预测该辐射场的模型，并与好奇号探测器上的 RAD 仪器在 2015 年 11 月 15 日至 2016 年 1 月 15 日之间的测量结果进行比较。在这项工作中，展示了 PLANETOCOSMICS/GEANT4 为研讨会做出的贡献。研究了火星表面上的次级粒子能谱，并讨论了不同能量下不同粒子辐射场的方向性。各向同性粒子通量与通量剂量转换因子结合，可计算组织平板中的吸收剂量率和剂量当量率。
