Energetic Particle Radiation Environment Observed by RAD on the Surface of Mars during the September 2017 Event

Ehresmann, B. and Hassler, D. M. and Zeitlin, C. and Guo, J. and Wimmer-Schweingruber, R. F. and Matthiä, Daniel and Lohf, H. and Burmeister, S. and Rafkin, S. C. R. and Berger, Thomas and Reitz, G. (2018) Energetic Particle Radiation Environment Observed by RAD on the Surface of Mars during the September 2017 Event. Geophysical Research Letters, 45 (11), pp. 5305-5311. Wiley. doi: 10.1029/2018GL077801. ISSN 0094-8276.

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Official URL: http://dx.doi.org/10.1029/2018GL077801

Abstract

The September 10-12 Solar Energetic Particle (SEP) Event produced the strongest increase of the radiation environment measured by the Radiation Assessment Detector (RAD) on the surface of Mars since landing in August 2012. We report the details of the measurements of the energetic particle environment from RAD in Gale crater during this event. The SEP event increased the low-energy proton flux (below 100 MeV) by a factor of thirty, and the higher-energy proton flux by a factor of four, above pre-event levels. The 4He flux (below 100 MeV/nuc) rose by factors up to ten, and neutral particles by a factor of two above background. The increase started on September 10 around 19:50 UTC, peak-level fluxes were reached on the morning of September 11 and prevailed for about 10 hours before decreasing towards background levels. The onset of a Forbush decrease on September 13 decreased the proton flux below pre-event intensities.

Item URL in elib:

https://elib.dlr.de/120100/

Document Type:

Article

Title:

Energetic Particle Radiation Environment Observed by RAD on the Surface of Mars during the September 2017 Event

Authors:

Authors	Institution or Email of Authors	Author's ORCID iD	ORCID Put Code
Ehresmann, B.	Southwest Research Institute, Boulder, CO, USA	UNSPECIFIED	UNSPECIFIED
Hassler, D. M.	Southwest Research Institute, Boulder, CO, USA	UNSPECIFIED	UNSPECIFIED
Zeitlin, C.	Leidos Innovations Corporation, Houston, TX, USA	UNSPECIFIED	UNSPECIFIED
Guo, J.	Christian-Albrechts-Universität zu Kiel, Germany	UNSPECIFIED	UNSPECIFIED
Wimmer-Schweingruber, R. F.	Christian-Albrechts-Universität zu Kiel, Germany	UNSPECIFIED	UNSPECIFIED
Matthiä, Daniel	UNSPECIFIED	https://orcid.org/0000-0003-1507-0143	UNSPECIFIED
Lohf, H.	Christian-Albrechts-Universität zu Kiel, Germany	UNSPECIFIED	UNSPECIFIED
Burmeister, S.	Christian-Albrechts-Universität zu Kiel, Germany	UNSPECIFIED	UNSPECIFIED
Rafkin, S. C. R.	Southwest Research Institute, Boulder, CO, USA	UNSPECIFIED	UNSPECIFIED
Berger, Thomas	UNSPECIFIED	https://orcid.org/0000-0003-3319-5740	UNSPECIFIED
Reitz, G.	Radiation Biology Department, German Aerospace Center (DLR), Institute of Aerospace Medicine, Linder Hoehe, 51147 Cologne, Germany	https://orcid.org/0000-0001-5045-0761	UNSPECIFIED

Date:

May 2018

Journal or Publication Title:

Geophysical Research Letters

Refereed publication:

Yes

Open Access:

Yes

Gold Open Access:

In SCOPUS:

Yes

In ISI Web of Science:

Yes

Volume:

DOI:

10.1029/2018GL077801

Page Range:

pp. 5305-5311

Publisher:

Wiley

ISSN:

0094-8276

Status:

Published

Keywords:

Mars, Radiation Assessment Detector (RAD)

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:

29 Jun 2018 10:13

Last Modified:

01 Oct 2020 13:16

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