NDLI: Evaluation of dose rate reduction in a spacecraft compartment due to additional water shield

Content Provider	Springer Nature Link
Author	Sato, T. Niita, K. Shurshakov, V. A. Yarmava, E. N. Nikolaev, I. V. Iwase, H. Sihver, L. Mancusi, D. Endo, A. Matsuda, N. Iwamoto, Y. Nakashima, H. Sakamoto, Y. Yasuda, H. Takada, M. Nakamura, T.
Copyright Year	2011
Abstract	The dose reduction rates brought about by the installation of additional water shielding in a spacecraft are calculated in the paper using the particles and heavy ion transport code system PHITS, which can deal with transport of all kinds of hadrons and heavy ions with energies up to 100 GeV/n in three-dimensional phase spaces. In the PHITS simulation, an imaginary spacecraft was irradiated isotropically by cosmic rays with charges up to 28 and energies up to 100 GeV/n, and the dose reduction rates due to water shielding were evaluated for 5 types of doses: the dose equivalents obtained from the LET and linear energy spectra, the dose equivalents to skin and red bone marrow, and the effective dose equivalent. The results of the simulation indicate that the dose reduction rates differ according to the type of dose evaluated. For example, 5 g/cm2 water shielding reduces the effective dose equivalent and the LET dose equivalent by approximately 14% and 32%, respectively. Such degrees of dose reduction can be regarded to make water shielding worth the efforts required to install it.
Starting Page	319
Ending Page	324
Page Count	6
File Format	PDF
ISSN	00109525
Journal	Cosmic Research
Volume Number	49
Issue Number	4
e-ISSN	16083075
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2011-08-07
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Extraterrestrial Physics, Space Sciences Astrophysics and Astroparticles Astronomy, Astrophysics and Cosmology
Content Type	Text
Resource Type	Article
Subject	Astronomy and Astrophysics Aerospace Engineering Space and Planetary Science

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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