The radiation environment on the surface of Mars - Summary of model calculations and comparison to RAD data
The radiation environment on the surface of Mars - Summary of model calculations and comparison to RAD data
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DOI：
10.1016/j.lssr.2017.06.003
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发表时间：
2017-08-01
影响因子：
2.5
通讯作者：
Zeitlin, Cary
中科院分区：
文献类型：
--
作者：
Matthiae, Daniel;Hassler, Donald M.;Zeitlin, Cary
火星表面的辐射环境，除了偶尔的太阳高能粒子事件外，主要是银河宇宙辐射、二次粒子与火星大气相互作用产生的二次粒子以及火星风化层的反照率粒子。高能的初级宇宙辐射主要由完全电离的原子核组成，在火星表面形成一个复杂的辐射场。只有结合测量和模型计算，才能充分了解这个复杂的磁场、它的形成及其对未来载人火星任务宇航员的潜在健康风险。在这项工作中，介绍了2016年6月在美国科罗拉多州博尔德举行的研讨会的结果：将火星科学实验室辐射评估探测器的实验结果与GEANT4、HETC-HEDS、HZETRN、MCNP6和PHITS的模型结果进行了比较。研究了2015年11月15日至2016年1月15日期间测量的带电粒子和中性粒子光谱和剂量率以及该时间段计算的模型结果。
The radiation environment at the Martian surface is, apart from occasional solar energetic particle events, dominated by galactic cosmic radiation, secondary particles produced in their interaction with the Martian atmosphere and albedo particles from the Martian regolith. The highly energetic primary cosmic radiation consists mainly of fully ionized nuclei creating a complex radiation field at the Martian surface. This complex field, its formation and its potential health risk posed to astronauts on future manned missions to Mars can only be fully understood using a combination of measurements and model calculations. In this work the outcome of a workshop held in June 2016 in Boulder, CO, USA is presented: experimental results from the Radiation Assessment Detector of the Mars Science Laboratory are compared to model results from GEANT4, HETC-HEDS, HZETRN, MCNP6, and PHITS. Charged and neutral particle spectra and dose rates measured between 15 November 2015 and 15 January 2016 and model results calculated for this time period are investigated.