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载人深空探测被动屏蔽优化仿真研究
Alternative TitleSimulation Study on Passive Shielding Optimization in Manned Deep Space Exploration
杨涛; 于梅; 牛睿; 蔡明辉; 韩建伟
Department保障部/保障与试验验证中心
Source Publication载人航天
2018
Volume24Issue:5Pages:590-595
Language中文
Keyword深空探测 被动屏蔽材料 重离子
Abstract

深空环境下高能银河宇宙射线与防护材料间产生了复杂多样的次级粒子,使得航天员辐射损伤效应和防护问题突出。运用Geant4蒙特卡罗仿真工具,计算了1000 MeV·n~(-1)的铁离子与铝或聚乙烯相互作用后,产生次级碎片粒子分布规律;分析了银河宇宙射线经过不同材料屏蔽体后,其碎片及次级中子对人体剂量当量的贡献随屏蔽厚度变化规律;依据该规律优化设计质量密度为20 g/cm~2聚乙烯掺杂比为15%硼的复合材料,得到的仿真设计复合材料成分比例可为载人航天被动屏蔽材料制备提供依据。

Other Abstract

Complex nuclear reactions will occur between the high-energy galactic cosmic rays and the protective materials in deep space environment and a large number of secondary particles will be produced which makes the astronaut dose protection very complex.Based on the Monte-Carlo simulation software Geant4,the distribution law of the secondary debris particles generated after the interaction between 1000 MeV·n~(-1) Fe ion and the shielding material aluminum or polyethylene was studied.The changes of the debris and the secondary neutrons with the shielding thickness for the galactic cosmic ray radiation particles were analyzed.Based on those researches,the composite material with a mass density of 20 g/cm~2 and polyethylene doped ratio of 15% boron was optimized.The obtained proportion of the simulated composite material may provide the basis for the preparation of passive shielding materials in manned spaceflight.

Indexed ByCSCD
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Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/6672
Collection保障部/保障与试验验证中心
Recommended Citation
GB/T 7714
杨涛,于梅,牛睿,等. 载人深空探测被动屏蔽优化仿真研究[J]. 载人航天,2018,24(5):590-595.
APA 杨涛,于梅,牛睿,蔡明辉,&韩建伟.(2018).载人深空探测被动屏蔽优化仿真研究.载人航天,24(5),590-595.
MLA 杨涛,et al."载人深空探测被动屏蔽优化仿真研究".载人航天 24.5(2018):590-595.
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