Cited by 56Planetary Science and ExplorationIonosphere and magnetosphere dynamicsAstro and Planetary Science

Diurnal variations of energetic particle radiation at the surface of Mars as observed by the Mars Science Laboratory Radiation Assessment Detector

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Rafkin, Scot C. R., Zeitlin, Cary, Ehresmann, Bent, Hassler, Don, Guo, Jingnan, Köhler, Jan, Wimmer‐Schweingruber, Robert, Gomez‐Elvira, Javier +15 more·2014·Journal of Geophysical Research: Planets

Abstract

The Radiation Assessment Detector onboard the Mars Science Laboratory rover Curiosity is detecting the energetic particle radiation at the surface of Mars. Data collected over the first 350 Martian days of the nominal surface mission show a pronounced diurnal cycle in both the total dose rate and the neutral particle count rate. The diurnal variations detected by the Radiation Assessment Detector were neither anticipated nor previously considered in the literature. These cyclic variations in dose rate and count rate are shown to be the result of changes in atmospheric column mass driven by the atmospheric thermal tide that is characterized through pressure measurements obtained by the Rover Environmental Monitoring Station, also onboard the rover. In addition to bulk changes in the radiation environment, changes in atmospheric shielding forced by the thermal tide are shown to disproportionately affect heavy ions compared to H and He nuclei.

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Authors
Rafkin, S. C. R., Zeitlin, C., Ehresmann, B., Hassler, D., Guo, J., Köhler, J., Wimmer‐Schweingruber, R., Gomez‐Elvira, J., Harri, A., Kahanpää, H., Brinza, D. E., Weigle, G., Böttcher, S., Böhm, E., Burmeister, S., Martin, C., Reitz, G., Cucinotta, F. A., Kim, M., Grinspoon, D., Bullock, M. A., Posner, A., & the MSL Science Team
Affiliations
  • Southwest Research Institute (US)
  • Southwest Research Institute Boulder Colorado USA
  • Christian-Albrechts-Universität zu Kiel (DE)
  • Department of Extraterrestrial Physics Christian‐Albrecths University Kiel Germany
  • Centro de Astrobiología (CSIC‐INTA) Madrid Spain
  • Finnish Meteorological Institute (FI)
  • Jet Propulsion Laboratory (US)
  • Big Head Endian Burden Kansas USA
  • Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR) (DE)
  • University of Nevada, Las Vegas (US)
  • Universities Space Research Association (US)
  • Library of Congress (US)
  • National Aeronautics and Space Administration (US)
Corresponding author
Rafkin, Scot C. R.
Venue
Journal of Geophysical Research: Planets
Published
2014-06
Volume
119
Issue
6
Pages
1345-1358
ISSN
  • 2169-9097 (ISSN-L)
  • 2169-9100
OpenAlex
W2159904434
Cited by
56
References
43
Citations by year
2026: 4 · 2025: 3 · 2024: 2 · 2023: 2 · 2022: 5 · 2021: 3 · 2020: 4 · 2019: 7 · 2018: 9 · 2017: 6 · 2016: 4 · 2015: 5 · 2014: 2
FWCI
3.05
Type
journal article
Language
en
Open access
Locations
  • Journal of Geophysical Research Planets (publishedVersion)
  • DIGITAL.CSIC (Spanish National Research Council (CSIC)) (submittedVersion)
  • elib (German Aerospace Center) (submittedVersion)
  • Smithsonian Digital Repository (Smithsonian Institution) (submittedVersion)
Funders
DLR's Space Administration (50QM0501, 50QM1201)
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Planetary Science and Exploration
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Ionosphere and magnetosphere dynamics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Astro and Planetary Science
Keywords
diurnal variation, Radiation Assessment Detector, Curiosity rover, atmospheric shielding, heavy ions, Mars atmosphere

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