elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

A Generalized Approach to Model the Spectra and Radiation Dose Rate of Solar Particle Events on the Surface of Mars

Guo, Jingnan and Zeitlin, Cary and Wimmer-Schweingruber, Robert F. and McDole, Thoren and Kühl, Patrick and Appel, Jan K. and Matthiä, Daniel and Krauss, Johannes and Köhler, Jan (2018) A Generalized Approach to Model the Spectra and Radiation Dose Rate of Solar Particle Events on the Surface of Mars. The Astronomical Journal, 155 (1), p. 49. IOP Publishing. doi: 10.3847/1538-3881/aaa085. ISSN 0004-6256.

[img] PDF
3MB

Official URL: http://dx.doi.org/10.3847/1538-3881/aaa085

Abstract

For future human missions to Mars, it is important to study the surface radiation environment during extreme and elevated conditions. In the long term, it is mainly galactic cosmic rays (GCRs) modulated by solar activity that contribute to the radiation on the surface of Mars, but intense solar energetic particle (SEP) events may induce acute health effects. Such events may enhance the radiation level significantly and should be detected as immediately as possible to prevent severe damage to humans and equipment. However, the energetic particle environment on the Martian surface is significantly different from that in deep space due to the influence of the Martian atmosphere. Depending on the intensity and shape of the original solar particle spectra, as well as particle types, the surface spectra may induce entirely different radiation effects. In order to give immediate and accurate alerts while avoiding unnecessary ones, it is important to model and well understand the atmospheric effect on the incoming SEPs, including both protons and helium ions. In this paper, we have developed a generalized approach to quickly model the surface response of any given incoming proton/helium ion spectra and have applied it to a set of historical large solar events, thus providing insights into the possible variety of surface radiation environments that may be induced during SEP events. Based on the statistical study of more than 30 significant solar events, we have obtained an empirical model for estimating the surface dose rate directly from the intensities of a power-law SEP spectra.

Item URL in elib:https://elib.dlr.de/119264/
Document Type:Article
Title:A Generalized Approach to Model the Spectra and Radiation Dose Rate of Solar Particle Events on the Surface of Mars
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Guo, JingnanInstitute of Experimental and Applied Physics, Christian-Albrechts-University, Kiel, Germanyhttps://orcid.org/0000-0002-8707-076X
Zeitlin, CaryLeidos 9801 Westheimer Road #900, Houston, TX, USAUNSPECIFIED
Wimmer-Schweingruber, Robert F.Institute of Experimental and Applied Physics, Christian-Albrechts-University, Kiel, Germanyhttps://orcid.org/0000-0002-7388-173X
McDole, ThorenInstitute of Experimental and Applied Physics, Christian-Albrechts-University, Kiel, GermanyUNSPECIFIED
Kühl, PatrickInstitute of Experimental and Applied Physics, Christian-Albrechts-University, Kiel, GermanyUNSPECIFIED
Appel, Jan K.Institute of Experimental and Applied Physics, Christian-Albrechts-University, Kiel, GermanyUNSPECIFIED
Matthiä, DanielRadiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany; Daniel.Matthiae (at) dlr.dehttps://orcid.org/0000-0003-1507-0143
Krauss, JohannesInstitute of Experimental and Applied Physics, Christian-Albrechts-University, Kiel, GermanyUNSPECIFIED
Köhler, JanInstitute of Experimental and Applied Physics, Christian-Albrechts-University, Kiel, GermanyUNSPECIFIED
Date:5 January 2018
Journal or Publication Title:The Astronomical Journal
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:155
DOI :10.3847/1538-3881/aaa085
Page Range:p. 49
Publisher:IOP Publishing
ISSN:0004-6256
Status:Published
Keywords:cosmic background radiation; planets and satellites: atmospheres; radiation: dynamics; Sun: activity; Sun: particle emission
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Vorhaben MSL-Radiation (old), R - Vorhaben Strahlenbiologie (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Radiation Biology
Deposited By: Kopp, Kerstin
Deposited On:23 Mar 2018 08:32
Last Modified:31 Jul 2019 20:16

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Website and database design: Copyright © German Aerospace Center (DLR). All rights reserved.