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- Title
MSL-RAD RADIATION ENVIRONMENT MEASUREMENTS.
- Authors
Jingnan Guo; Zeitlin, Cary; Wimmer-Schweingruber, Robert F.; Hassler, Donald M.; Ehresmann, Bent; Köhler, Jan; Böhm, Eckart; Böttcher, Stephan; Brinza, David; Burmeister, Sönke; Cucinotta, Francis; Martin, Cesar; Posner, Arik; Rafkin, Scot; Reitz, Guenther
- Abstract
In this study, results are presented from the on-board radiation assessment detector (RAD) of Mars Science Laboratory (MSL). RAD is designed to measure the energetic particle radiation environment, which consists of galactic cosmic rays (GCRs) and solar energetic particles (SEPs) as well as secondary particles created by nuclear interactions of primary particles in the shielding (during cruise) or Martian soil and atmosphere (surface measurements). During the cruise, RAD collected data on space radiation from inside the craft, thus allowing for a reasonable estimation of what a human crew travelling to/from Mars might be exposed to. On the surface of Mars, RAD is shielded by the atmosphere (from above) and the planet itself (from below). RAD measures the first detailed radiation data from the surface of another planet, and they are highly relevant for planning future crewed missions. The results for radiation dose and dose equivalent (a quantity most directly related to human health risk) are presented during the cruise phase, as well as on the Martian surface. Dose and dose equivalent are dominated by the continuous GCR radiation, but several SEP events were also detected and are discussed here.
- Subjects
RADIATION &; the environment; SOLAR energetic particles; GALACTIC cosmic rays; MARS (Planet); RADIATION doses
- Publication
Radiation Protection Dosimetry, 2015, Vol 166, Issue 1-4, p290
- ISSN
0144-8420
- Publication type
Article
- DOI
10.1093/rpd/ncv297