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Estimation of neutron and other radiation exposure components in low earth orbitThe interaction of high-energy space radiation with spacecraft materials generates a host of secondary particles, some, such as neutrons, are more biologically damaging and penetrating than the original primary particles. Before committing astronauts to long term exposure in such high radiation environments, a quantitative understanding of the exposure and estimates of the associated risks are required. Energetic neutrons are traditionally difficult to measure due to their neutral charge. Measurement methods have been limited by mass and weight requirements in space to nuclear emulsion, activation foils, a limited number of Bonner spheres, and TEPCs. Such measurements have had limited success in quantifying the neutron component relative to the charged components. We will show that a combination of computational models and experimental measurements can be used as a quantitative tool to evaluate the radiation environment within the Shuttle, including neutrons. Comparisons with space measurements are made with special emphasis on neutron sensitive and insensitive devices. c2001 Elsevier Science Ltd. All rights reserved.
Document ID
20040088454
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Singleterry, R. C. Jr
(NASA Langley Research Center Hampton VA United States)
Badavi, F. F.
Shinn, J. L.
Cucinotta, F. A.
Badhwar, G. D.
Clowdsley, M. S.
Heinbockel, J. H.
Wilson, J. W.
Atwell, W.
Beaujean, R.
Kopp, J.
Reitz, G.
Date Acquired
August 21, 2013
Publication Date
June 1, 2001
Publication Information
Publication: Radiation measurements
Volume: 33
Issue: 3
ISSN: 1350-4487
Subject Category
Aerospace Medicine
Distribution Limits
Public
Copyright
Other
Keywords
STS-57 Shuttle Project
manned
Flight Experiment
short duration
STS-36 Shuttle Project
NASA Center LaRC
STS-31 Shuttle Project
NASA Discipline Radiation Health
NASA Center JSC

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