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EXPOSE-R cosmic radiation time profile

Dachev, Tsvetan and Horneck, Gerda and Häder, Donat-Peter and Schuster, Martin and Lebert, Michael (2014) EXPOSE-R cosmic radiation time profile. International Journal of Astrobiology, pp. 17-25. Cambridge University Press. DOI: 10.1017/S1473550414000093 ISSN 1473-5504

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Official URL: http://dx.doi.org/10.1017/S1473550414000093


The aim of the paper is to present the time profile of cosmic radiation exposure obtained by the radiation risks radiometer-dosimeter (R3DR) during the ESA exposition facility for EXPOSE-R mission (EXPOSE-R) in the EXPOSE-R facility outside the Russian Zvezda module of the International Space Station (ISS). Another aim is to make the obtained results available to other EXPOSE-R teams for use in their data analysis. R3DR is a low mass and small dimensions automated device, which measures solar radiation in four channels and in addition cosmic ionizing radiation. The main results of cosmic ionizing radiation measurements are: three different radiation sources were detected and quantified: galactic cosmic rays (GCR), energetic protons from the inner radiation belt (IRB) in the region of the South Atlantic anomaly and energetic electrons from the outer radiation belt (ORB). The highest daily averaged absorbed dose rate of 506 μGy day⁻¹ came from IRB protons; GCR delivered much smaller daily absorbed dose rates of 81.4 μGy day⁻¹ on average, and ORB source delivered on average a dose rate of 89 μGy day⁻¹. The IRB and ORB daily averaged absorbed dose rates were higher than those observed during the ESA exposition facility for EXPOSE-E mission (EXPOSE-E), whereas the GCR rate was smaller than that measured during the EXPOSE-E mission. The reason for this difference is much less surrounding constructions shielding of the R3DR instrument in comparison with the R3DE instrument.

Item URL in elib:https://elib.dlr.de/89163/
Document Type:Article
Title:EXPOSE-R cosmic radiation time profile
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Dachev, TsvetanSpace Research and Technologies Institute, Bulgarian Academy of Sciences (SRTI-BAS), Acad. G. Bonchev Str. Block 1, 1113 Sofia, Bulgaria; e-mail: tdachev (at) bas.bgUNSPECIFIED
Horneck, GerdaDLR, Institute of Aerospace Medicine, Cologne, GermanyUNSPECIFIED
Häder, Donat-PeterNeue Str. 9, 91096 Möhrendorf, GermanyUNSPECIFIED
Schuster, MartinCell Biology Division, Department of Biology, Friedrich-Alexander-University, Erlangen, GermanyUNSPECIFIED
Lebert, MichaelCell Biology Division, Department of Biology, Friedrich-Alexander-University, Erlangen, GermanyUNSPECIFIED
Journal or Publication Title:International Journal of Astrobiology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1017/S1473550414000093
Page Range:pp. 17-25
Publisher:Cambridge University Press
Keywords:dosimetry, galactic cosmic rays, ionizing radiation, ISS, space radiation
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):R - Vorhaben Strahlenbiologie
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Radiation Biology
Deposited By: Kopp, Kerstin
Deposited On:20 May 2014 15:42
Last Modified:22 Sep 2015 10:41

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