可穿戴太阳质子应急辐射防护服的仿真设计  

Numerical Investigation of Wearable Clothing for SPE Shielding

作　　者：蔡明辉 杨涛 许亮亮 夏清 韩建伟 CAI Minghui;YANG Tao;XU Liangliang;XIA Qing;HAN Jianwei(National Space Science Center,Chinese Academy of Sciences,Beijing 100190,China;School of Astronomy and Space Science,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院国家空间科学中心,北京100190 [2]中国科学院大学天文与空间科学学院,北京100049

出　　处：《载人航天》2022年第2期190-195,共6页Manned Spaceflight

基　　金：技术基础科研项目(JSZL2019903B001);中科院国家空间科学中心“攀登计划”(E1PD3004)。

摘　　要：针对载人月球探测任务中偶发太阳质子事件对航天员造成的突出辐射剂量危害与防护问题,采用蒙特卡洛方法仿真研究了常用屏蔽材料在舱内与舱外航天服应用中的防护效能,分析了不同高密度聚乙烯和氮化硼配比组成下单层富氢复合材料的屏蔽效果,并结合NASA航天服特征参数仿真分析了聚乙烯材料对航天服不同部位的屏蔽效率。结果表明:在相同质量密度下,氢元素含量较高的聚乙烯和水防护效能明显优于铝、钽等金属材料;添加氮化硼没有明显改善聚乙烯的屏蔽效能;增加相同质量聚乙烯材料,航天服下部躯体屏蔽效率提升最高,上部躯体次之,头盔最低。The accidental solar proton event(SPE)during manned lunar exploration mission can bring prominent radiation dose risk to astronauts.In this paper,the Monte Carlo method was used to simulate and study the protection efficiency of the commonly used shielding materials in IVA and EVA space suits.The shielding effect of the single-layer hydrogen rich composite materials composed of different ratios of high-density polyethylene and boron nitride was analyzed and the shielding efficiency of polyethylene materials on different parts of space suits was simulated on the basis of the characteristic parameters of NASA space suits.The results showed that under the same mass density,the protective efficiency of polyethylene and water with high hydrogen content was significantly better than that of the metal materials such as aluminum and tantalum.The addition of boron nitride did not significantly improve the shielding efficiency of polyethylene.Under the same mass density,the shielding efficiency of the lower body of spacesuit was the highest,the upper body was the second,and the helmet was the lowest.

关 键 词：太阳质子事件 辐射防护 屏蔽 航天服 

分 类 号：O572[理学—粒子物理与原子核物理] V19[理学—物理]