Method for the prediction of the effective dose equivalent to the crew of the International Space Station |
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| Authors: | Samy El-Jaby Leena Tomi Lembit Sihver Tatsuhiko Sato Richard B Richardson Brent J Lewis |
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| Institution: | 1. Royal Military College of Canada, Department of Chemistry and Chemical Engineering, 17000 Station Forces, Kingston, ON K7K7B, Canada;2. Atomic Energy of Canada Limited, Station 51, Chalk River, ON KOJ1JO, Canada;3. Canadian Space Agency, Operational Space Medicine Division, 6767 Route de l’Aéroport, Longueuil, QC J3Y8Y9, Canada;4. Chalmers University of Technology, Department of Nuclear Engineering and Applied Physics, Fysikgränd 3, Göteborg SE-412 96, Sweden;5. Japan Atomic Energy Agency, Nuclear Science and Engineering Directorate, Shirakata Shirane 2-4, Tokai, Ibaraki 319-1195, Japan;6. University of Ontario Institute of Technology, 2000 Simcoe Street North, Room ERC 4036, Oshawa, ON L1H 7K4, Canada |
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| Abstract: | This paper describes a methodology for assessing the pre-mission exposure of space crew aboard the International Space Station (ISS) in terms of an effective dose equivalent. In this approach, the PHITS Monte Carlo code was used to assess the particle transport of galactic cosmic radiation (GCR) and trapped radiation for solar maximum and minimum conditions through an aluminum shield thickness. From these predicted spectra, and using fluence-to-dose conversion factors, a scaling ratio of the effective dose equivalent rate to the ICRU ambient dose equivalent rate at a 10 mm depth was determined. Only contributions from secondary neutrons, protons, and alpha particles were considered in this analysis. |
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| Keywords: | Effective dose equivalent ISS Predictive model GCR Trapped radiation PHITS |
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