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Electron/positron measurements obtained with the Mars Science Laboratory Radiation Assessment Detector on the surface of Mars

Köhler, J. and Wimmer-Schweingruber, R. F. and Appel, J. and Ehresmann, B. and Zeitlin, C. and Hassler, D. M. and Reitz, G. and Brinza, D. E. and Böttcher, S. and Böhm, E. and Burmeister, S. and Guo, J. and Harri, A.-M. and Kahanpää, H. and Krauss, J. and Lohf, H. and Martin, C. and Matthiä, D. and Posner, A. and Rafkin, S. (2016) Electron/positron measurements obtained with the Mars Science Laboratory Radiation Assessment Detector on the surface of Mars. Annales Geophysicae, 34 (1), pp. 133-141. Copernicus Publications. DOI: 10.5194/angeo-34-133-2016 ISSN 0992-7689

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Official URL: http://dx.doi.org/10.5194/angeo-34-133-2016

Abstract

The Radiation Assessment Detector (RAD), on board the Mars Science Laboratory (MSL) rover Curiosity, measures the energetic charged and neutral particles and the radiation dose rate on the surface of Mars. Although charged and neutral particle spectra have been investigated in detail, the electron and positron spectra have not been investigated yet. The reason for that is that they are difficult to separate from each other and because of the technical challenges involved in extracting energy spectra from the raw data. We use GEANT4 to model the behavior of the RAD instrument for electron/positron measurements.We compare Planetocosmics predictions for different atmospheric pressures and different modulation parameters 8 with the obtained RAD electron/positron measurements.We find that the RAD electron/positron measurements agree well with the spectra predicted by Planetocosmics. Both RAD measurements and Planetocosmics simulation show a dependence of the electron/ positron fluxes on both atmospheric pressure and solar modulation potential.

Item URL in elib:https://elib.dlr.de/103871/
Document Type:Article
Title:Electron/positron measurements obtained with the Mars Science Laboratory Radiation Assessment Detector on the surface of Mars
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Köhler, J.Institute of Experimental and Applied Physics, Christian-Albrechts-University, Kiel, Germany; koehler (at) physik.uni-kiel.deUNSPECIFIED
Wimmer-Schweingruber, R. F.Institute of Experimental and Applied Physics, Christian-Albrechts-University, Kiel, GermanyUNSPECIFIED
Appel, J.Institute of Experimental and Applied Physics, Christian-Albrechts-University, Kiel, GermanyUNSPECIFIED
Ehresmann, B.Southwest Research Institute, Space Science and Engineering Division, Boulder, CO, USAUNSPECIFIED
Zeitlin, C.Southwest Research Institute, Earth, Oceans & Space Department, Durham, NH, USA; now at: Lockheed Martin Information Systems & Global Solutions, Houston, TX, USAUNSPECIFIED
Hassler, D. M.Southwest Research Institute, Space Science and Engineering Division, Boulder, CO, USAUNSPECIFIED
Reitz, G.Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, GermanyUNSPECIFIED
Brinza, D. E.Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USAUNSPECIFIED
Böttcher, S.Institute of Experimental and Applied Physics, Christian-Albrechts-University, Kiel, GermanyUNSPECIFIED
Böhm, E.Institute of Experimental and Applied Physics, Christian-Albrechts-University, Kiel, GermanyUNSPECIFIED
Burmeister, S.Institute of Experimental and Applied Physics, Christian-Albrechts-University, Kiel, GermanyUNSPECIFIED
Guo, J.Institute of Experimental and Applied Physics, Christian-Albrechts-University, Kiel, GermanyUNSPECIFIED
Harri, A.-M.Finnish Meteorological Institute, Helsinki, FinlandUNSPECIFIED
Kahanpää, H.Finnish Meteorological Institute, Helsinki, Finland and Aalto University, Espoo, FinlandUNSPECIFIED
Krauss, J.Institute of Experimental and Applied Physics, Christian-Albrechts-University, Kiel, GermanyUNSPECIFIED
Lohf, H.Institute of Experimental and Applied Physics, Christian-Albrechts-University, Kiel, GermanyUNSPECIFIED
Martin, C.Institute of Experimental and Applied Physics, Christian-Albrechts-University, Kiel, GermanyUNSPECIFIED
Matthiä, D.Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, GermanyUNSPECIFIED
Posner, A.NASA Headquarters, Science Mission Directorate, Washington DC, USAUNSPECIFIED
Rafkin, S.Southwest Research Institute, Space Science and Engineering Division, Boulder, CO, USAUNSPECIFIED
Date:2016
Journal or Publication Title:Annales Geophysicae
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:34
DOI :10.5194/angeo-34-133-2016
Page Range:pp. 133-141
Publisher:Copernicus Publications
ISSN:0992-7689
Status:Published
Keywords:Interplanetary physics (cosmic rays; energetic particles; instruments and techniques)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Vorhaben MSL-Radiation
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Radiation Biology
Deposited By: Kopp, Kerstin
Deposited On:19 Apr 2016 09:31
Last Modified:08 Mar 2018 18:47

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