Volume 41 Issue 6
Nov.  2021
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CAI Minghui, XU Liangliang, YANG Tao, HAN Jianwei. A Novel Magnetic Configuration for Space Radiation Active Shielding[J]. Chinese Journal of Space Science, 2021, 41(6): 920-927. doi: 10.11728/cjss2021.06.920
Citation: CAI Minghui, XU Liangliang, YANG Tao, HAN Jianwei. A Novel Magnetic Configuration for Space Radiation Active Shielding[J]. Chinese Journal of Space Science, 2021, 41(6): 920-927. doi: 10.11728/cjss2021.06.920
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A Novel Magnetic Configuration for Space Radiation Active Shielding

doi: 10.11728/cjss2021.06.920 cstr: 32142.14.cjss2021.06.920

  • 1. National Space Science Center, Chinese Academy of Sciences, Beijing 100190;

  • 2. School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049

Funds:

Supported by the Strategic Priority Research Program of Chinese Academy of Sciences (XDA17010301)

  • Received Date: 2020-12-22
  • Rev Recd Date: 2021-10-25
  • Publish Date: 2021-11-15
    Abstract
  • Space radiation has been identified as the main health hazard to crews involved in manned Mars missions. Active shielding is more effective than passive shielding to the very energetic particles from cosmic rays. Particle motion in a magnetic field is studied based on the single-particle theory and Monte Carlo method. By comparing the shielding efficiency of different magnetic field configurations, a novel active magnetic shielding configuration with lower mass cost and power consumption is proposed for manned Mars missions. The new magnetic configuration can shield 92.8% of protons and 84.4% of alpha particles with E < 4 GeV·n-1, when considering the passive shielding contribution of 10.0 g·cm-2 Al Shielding, the required magnetic stiffness can be reduced from 27 Tm to 16 Tm. The detailed analysis of mass cost and power consumption shows that active shielding will be a promising means to protect crews from space radiation exposure in manned Mars missions.

     

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