NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Production of neutrons from interactions of GCR-like particlesIn order to help assess the risk to astronauts due to the long-term exposure to the natural radiation environment in space, an understanding of how the primary radiation field is changed when passing through shielding and tissue materials must be obtained. One important aspect of the change in the primary radiation field after passing through shielding materials is the production of secondary particles from the breakup of the primary. Neutrons are an important component of the secondary particle field due to their relatively high biological weighting factors, and due to their relative abundance, especially behind thick shielding scenarios. Because of the complexity of the problem, the estimation of the risk from exposure to the secondary neutron field must be handled using calculational techniques. However, those calculations will need an extensive set of neutron cross section and thicktarget neutron yield data in order to make an accurate assessment of the risk. In this paper we briefly survey the existing neutron-production data sets that are applicable to the space radiation transport problem, and we point out how neutron production from protons is different than neutron production from heavy ions. We also make comparisons of one the heavy-ion data sets with Boltzmann-Uehling-Uhlenbeck (BUU) calculations.
Document ID
20040089194
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Heilbronn, L.
(Lawrence Berkeley Laboratory Berkeley, CA 94720, United States)
Frankel, K.
Holabird, K.
Zeitlin, C.
McMahan, M. A.
Rathbun, W.
Cronqvist, M.
Gong, W.
Madey, R.
Htun, M.
Elaasar, M.
Anderson, B. D.
Baldwin, A. R.
Jiang, J.
Keane, D.
Scott, A.
Shao, Y.
Watson, J. W.
Zhang, W. M.
Galonsky, A.
Ronningen, R.
Zecher, P.
Kruse, J.
Wang, J.
Miller, J.
Date Acquired
August 21, 2013
Publication Date
January 1, 1998
Publication Information
Publication: Acta astronautica
Volume: 42
Issue: 8-Jan
ISSN: 0094-5765
Subject Category
Aerospace Medicine
Funding Number(s)
CONTRACT_GRANT: DE-FG89ER40531
CONTRACT_GRANT: L1-3240C
CONTRACT_GRANT: DE-AC03-76SF00098
Distribution Limits
Public
Copyright
Other
Keywords
Non-NASA Center
NASA Discipline Radiation Health

Available Downloads

There are no available downloads for this record.
No Preview Available