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First measurements of the radiation dose on the lunar surface

2020; American Association for the Advancement of Science; Volume: 6; Issue: 39 Linguagem: Inglês

10.1126/sciadv.aaz1334

2375-2548

Shenyi Zhang, R. F. Wimmer‐Schweingruber, Jia Yu, Chi Wang, Qiang Fu, Yongliao Zou, Yueqiang Sun, Chunqin Wang, Donghui Hou, S. Böttcher, S. Burmeister, L. Seimetz, Björn Schuster, V. Knierim, Guohong Shen, Bin Yuan, H. Lohf, Jingnan Guo, Zigong Xu, J. L. Freiherr von Forstner, S. R. Kulkarni, Haitao Xu, Changbin Xue, Jun Li, Zhe Zhang, He Zhang, Thomas Berger, Daniel Matthiä, Christine E. Hellweg, Xufeng Hou, Jinbin Cao, Zhen Chang, Binquan Zhang, Yuesong Chen, Hao Geng, Zida Quan,

Spaceflight effects on biology

Human exploration of the Moon is associated with substantial risks to astronauts from space radiation. On the surface of the Moon, this consists of the chronic exposure to galactic cosmic rays and sporadic solar particle events. The interaction of this radiation field with the lunar soil leads to a third component that consists of neutral particles, i.e., neutrons and gamma radiation. The Lunar Lander Neutrons and Dosimetry experiment aboard China's Chang'E 4 lander has made the first ever measurements of the radiation exposure to both charged and neutral particles on the lunar surface. We measured an average total absorbed dose rate in silicon of 13.2 ± 1 μGy/hour and a neutral particle dose rate of 3.1 ± 0.5 μGy/hour.