Analysis of radiation dose variations measured by passive dosimeters onboard the International Space Station during the solar quiet period (2007–2008)

Analysis of radiation dose variations measured by passive dosimeters onboard the International Space Station during the solar quiet period (2007–2008) Full article

Journal

Radiation Measurements
ISSN: 1350-4487 , E-ISSN: 1879-0925

Output data

Year: 2013, Volume: 49, Pages: 95-102 Pages count : 8 DOI: 10.1016/j.radmeas.2012.11.020

Authors

Kodaira Satoshi ¹ , Kawashima Hajime ¹ , Kitamura Hisashi ¹ , Kurano Mieko ¹ , Uchihori Yukio ¹ , Yasuda Nakahiro ¹ , Ogura Koichi ² , Kobayashi Ikuo ³ , Suzuki Akifumi ³ , Koguchi Yasuhiro ⁴ , Akatov Yury A. ⁹ , Shurshakov Vyacheslav A. ⁵ , Tolochek Raisa V. ⁵ , Krasheninnikova Tatiana K. ⁶ , Ukraintsev Anatoliy D. ⁶ , Gureeva Elena A. ⁷ , Kuznetsov Vladimir N. ⁷ , Benton Eric R. ⁸

Affiliations

1	*National Institute of Radiological Sciences, Chiba, Japan;
2	Nihon University , Chiba, Japan
3	Nagase Landauer Ltd., Ibaraki, Japan
4	Chiyoda Technol Corporation, Ibaraki, Japan
5	Institute of Biomedical Problems at Russian Academy of Sciences, Moscow, Russia
6	OAO Biochimmash, Moscow, Russia
7	Space Rocket Corporation Energia, Moscow Region, Russia
8	Oklahoma State Univ., Stillwater (United States)
9	Institute of Biomedical Problems of the Russian Academy of Sciences (IBMP RAS)

The average absorbed dose and dose equivalent rates from space radiation were observed using passive dosimeters with same material and configuration at the same location onboard the International Space Station (ISS) over four different occasions (I - IV) between 2007 and 2008. The passive dosimeters consisted of a combination of thermoluminescent detectors (TLDs) and plastic nuclear track detectors (PNTDs). Total average absorbed dose rate increased by 68 ± 9% over two years. The observed increase was due to the incremental increase in the altitude of the ISS over the course of the experiment and the corresponding increase in trapped proton flux encountered during passage of the ISS through the SAA (South Atlantic Anomaly), which was confirmed with the results monitored by DB-8 active dosimeter on the ISS. The PNTD data showed that the average absorbed dose and dose equivalent rates from particles of LET∞H2O ≥ 100 keV/µm were 28 ± 2% and 51 ± 3% of ≥10 keV/µm during Periods I - III, while the dose contributions of particles ≥100 keV/µm during Period IV were 36 ± 5% and 59 ± 10%, respectively. The integral dose equivalent distribution during Period IV shows significant enhancement from particles ≥100 keV/µm. These facts suggest that a significant fraction of the high LET component is due to short-range recoil nuclei produced in target fragmentation reactions between primary protons and the nuclei of the passive dosimeters and surrounding materials.

Kodaira S. , Kawashima H. , Kitamura H. , Kurano M. , Uchihori Y. , Yasuda N. , Ogura K. , Kobayashi I. , Suzuki A. , Koguchi Y. , Akatov Y.A. , Shurshakov V.A. , Tolochek R.V. , Krasheninnikova T.K. , Ukraintsev A.D. , Gureeva E.A. , Kuznetsov V.N. , Benton E.R.
Analysis of radiation dose variations measured by passive dosimeters onboard the International Space Station during the solar quiet period (2007–2008)
Radiation Measurements. 2013. V.49. P.95-102. DOI: 10.1016/j.radmeas.2012.11.020 WOS Scopus OpenAlex

Web of science:	WOS:000317168500012
Scopus:	2-s2.0-84873985624
OpenAlex:	W2034148073

DB	Citing
OpenAlex	29
Scopus	27