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载人深空探测磁场主动辐射防护技术研究
蔡明辉1,2, 杨涛1, 韩建伟1,2
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
摘要:
基于单粒子轨道理论和蒙特卡洛方法建立了一种磁场主动屏蔽防护分析方法,针对理想磁场构型分析了屏蔽磁场强度、厚度和结构对屏蔽效果的影响。研究结果表明:屏蔽效率随磁刚度BL增大且当磁刚度BL一定时,增加磁场强度B比增加磁场厚度L更有效;对于有限长屏蔽磁场构型,端盖区需加强防护;桶状区与端盖区采用直线型屏蔽磁场的构型防护效果最好,能够对典型银河宇宙线能谱屏蔽90%的高能粒子。
关键词:  深空探测;空间辐射;航天员;主动屏蔽
DOI:10.15982/j.issn.2095-7777.2019.02.008
分类号:O4;V4
基金项目:北京市科技重大专项资助项目(Z181100002918004);中国科学院战略性先导科技专项(A类)资助项目(XDA17010301)
Study of Active Magnetic Radiation Shielding Technology for Manned Deep Space Exploration
CAI Minghui1,2, YANG Tao1, HAN Jianwei1,2
1.National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China;2.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, China
Abstract:
Based on the single particle orbital theory and Monte Carlo method, an active shielding analysis method of magnetic field is established. The influences of shielding magnetic field intensity,thickness and structure on shielding effect are analyzed for ideal magnetic field configuration. The results show that the shielding efficiency increases with the magnetic stiffness BL. When the magnetic stiffness BL is constant, increasing the magnetic field intensity B is more effective than increasing the magnetic field thickness L. For the finite shielding magnetic field configuration,intensified protection is required for the end cover area. The linear shielding magnetic field configurations in the barrel area and the end cover area have the best shielding performance,and can shield 90% of the typical galactic cosmic ray energy spectrum.
Key words:  deep space exploration;space radiation;astronauts;active shielding