Mars neutron radiation environment from HEND/Odyssey and DAN/MSL observations

Abstract High Energy Neutron Detector (HEND) onboard the orbital Mars Odyssey mission and Dynamic Albedo of Neutrons (DAN) onboard the Curiosity rover are measuring neutron albedo of Mars produced by Galactic Cosmic Rays (GCR). The numerical simulations of HEND/Odyssey and DAN/MSL and comparison between model predictions and experimental data has been implemented to unfold Mars neutron spectra both on orbit and surface and evaluate biological impact contributed by neutrons. It was found that the maximum neuron equivalent dose rate by neutrons below 10 ​MeV could be as high as 45 ​± ​7 ​μSv per day, which is about 6–7% of the expected charged-particle dose equivalent rate.

• Publication year

  2019

• Venue

  Planetary and Space Science

• Publication date

  2019-04-01

• Fields of study

  Physics, Environmental Science

• Identifiers
  DOI 10.1016/j.pss.2020.104866
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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