alexa Radiation Environment on the International Space Station During the Solar Particle Events in March 2012
ISSN: 2332-2519

Journal of Astrobiology & Outreach
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Research Article

Radiation Environment on the International Space Station During the Solar Particle Events in March 2012

Jordanka Semkova1*, Tsvetan Dachev1, Rositza Koleva1, Stefan Maltchev1, Nikolay Bankov1, Victor Benghin2, Vyacheslav Shurshakov2, Vladislav Petrov2 and Sergey Drobyshev2
1Space research and technology institute, Bulgarian academy of sciences, Bulgaria
2State scientific centre of Russian federation, institute of biomedical problems, Russian academy of sciences, Russia
Corresponding Author : Jordanka Semkova
Space research and technology institute
Bulgarian academy of sciences, Bulgaria
E-mail: [email protected]
Received March 20, 2013; Accepted June 24, 2013; Published June 26, 2013
Citation: Semkova J, Dachev T, Koleva R, Maltchev S, Bankov N, et al. (2013) Radiation Environment on the International Space Station During the Solar Particle Events in March 2012. Astrol Outreach 1:102. doi:10.4172/2332-2519.1000102
Copyright: © 2013 Semkova J, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Abstract

The Liulin-5 charged particle telescope observes the radiation characteristics in the spherical tissue-equivalent phantom of MATROSHKA-R international project on the International Space Station (ISS) since June 2007. In this paper attention is drawn to the results from the measurements of dose rate and particle flux increase during the Solar Energetic Particles Events (SPE) occurred in March 2012. During that SPE the solar particles penetrated at high geographic latitudes in the regions of the south and north Earth magnetic poles and at 3 < L they caused particle flux and dose rates increase in all three detectors of Liulin-5, located at 40, 60 and 165 mm depths along the phantom’s radius. The maximum flux at 40 mm depth observed outside the South Atlantic Anomaly (SAA) during that SPE reached 7.2 part/cm2.s and the dose rate reached 107.8 μGy/h on 07.03.2012, 13:06 UT at L=4. The additional absorbed dose received from SPE is approximately 180 μGy and additional dose equivalent- approximately 448 μSv. These additional exposures are comparable to the averaged daily absorbed dose and dose equivalent measured in the spherical phantom in ISS during quite radiation conditions. Discussed are the linear energy transfer spectra measured and quality factors obtained during and after the SPE. Compared are data from Liulin-5 and other particle detectors in space during the SPE.

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