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Record Details

Record 48 of 3603
Shielding against galactic cosmic rays
External Online Source: doi:10.1016/0273-1177(95)00509-D
Author and Affiliation:
Schimmerling, W.(Univ. of Space Research Association, Washington, DC, Us, United States)
Wilson, J. W.(NASA Langley Research Center, Hampton, VA, US, United States)
Nealy, J. E.(NASA Langley Research Center, Hampton, VA, US, United States)
Thibeault, S. A.(NASA Langley Research Center, Hampton, VA, US, United States)
Cucinotta, F. A.(NASA Langley Research Center, Hampton, VA, US, United States)
Shinn, J. L.(NASA Langley Research Center, Hampton, VA, US, United States)
Kim, M.(College of William and Mary, Williamsburg, Va, US, United States)
Kiefer, R.(College of William and Mary, Williamsburg, Va, US, United States)
Abstract: Ions of galactic origin are modified but not attenuated by the presence of shielding materials. Indeed, the number of particles and the absorbed energy behind most shield materials increases as a function of shield thickness. The modification of the galactic cosmic ray composition upon interaction with shielding is the only effective means of providing astronaut protection. This modification is intimately conntected with the shield transport porperties and is a strong function of shield composition. The systematic behavior of the shield properites in terms of microscopic energy absorption events will be discussed. The shield effectiveness is examined with respect to convectional protection practice and in terms of a biological endpoint: the efficiency for reduction of the probability of transformation of shielded C3H1OT1/2 mouse cells. The relative advantage of developing new shielding technologies is discussed in terms of a shield performance as related to biological effect and the resulting uncertainty in estimating astronaut risk.
Publication Date: Jan 01, 1996
Document ID:
19950057268
(Acquired Dec 28, 1995)
Accession Number: 95A88867
Subject Category: SPACE RADIATION
Document Type: Journal Article
Publication Information: Advances in Space Research (ISSN 0273-1177); 17; 2; p. (2)31-(2)36; (SEE A95-88864)
Publisher Information: United Kingdom
Financial Sponsor: NASA; United States
Organization Source: NASA Langley Research Center; Hampton, VA, United States
Description: 6p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: EFFICIENCY; ENERGY ABSORPTION; GALACTIC COSMIC RAYS; ION ATOM INTERACTIONS; RADIATION SHIELDING; RISK; TRANSPORT PROPERTIES; ALUMINUM; COPPER; IRON; LIQUID HYDROGEN; WATER
Imprint And Other Notes: Near-earth radiation environment including time variations and secondary radiation; Meetings F2.6 and F2.7, COSPAR Scientific Assembly, 30th, Hamburg, Germany, July 11-21, 1994 . A95-88864, p. (2)31-(2)36
Availability Source: Other Sources
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