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Chinese Journal of Space Science ›› 2021, Vol. 41 ›› Issue (3): 439-444.doi: 10.11728/cjss2021.03.439

• Research Articles • Previous Articles     Next Articles

Radiation Dose of LND on the Lunar Surface in Two Years

ZHANG Shenyi1,2,3,4, HOU Donghui1,2,3,4, WIMMER-SCHWEINGRUBER R F1,5, SUN Yueqiang1,2,3, WANG Chunqin1,2,3, CHANG Zheng1,2,3, XU Zigong5, SHEN Guohong1,2,3, YUAN Bin1,2,3, XUE Changbin1   

  1. 1. National Space Science Center, Chinese Academy of Sciences, Beijing 100190;
    2. Beijing Key Laboratory of Space Environment Exploration, Beijing 100190;
    3. Key Laboratory of Environmental Space Situation Awareness Technology, Beijing 100190;
    4. University of Chinese Academy of Sciences, Beijing 100049;
    5. Institute of Experimental and Applied Physics, Christian-Albrechts-University, Kiel 24118
  • Received:2021-04-16 Revised:2021-05-03 Online:2021-05-15 Published:2021-06-11

Abstract: The radiation dose on the lunar surface is an important parameter affecting the safety of astronauts and the residence time of the lunar surface. The measurement of the particle radiation on the lunar surface can provide an important basis for the radiation safety protection of astronauts. Based on the two-year observation data of lunar neutron and radiation dose detector on Chang'E-4 lander, the average total absorbed dose rate of lunar particle radiation in silicon is 12.66±0.45μGy·h-1, and the absorbed dose rate of neutral particle is 2.67±0.16μGy·h-1. The radiation dose rate decreases slowly with time, but the change of LET spectrum is very small. The decrease of radiation dose rate due to the decrease of fubusch of GCR at the end of solar activity in December 2020 was observed.

Key words: Chang'E-4, Lunar surface, Radiation dose, Astronaut

CLC Number: