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LET analyses of biological damage during solar particle eventsThe effects of nuclear reactions on integral low-linear-energy-transfer (LET) protons spectra are studied, behind typical levels of spacecraft and body shielding, for the historically largest flares using the high-energy transport code BRYNTRN in conjunction with several biological damage models. The cellular track model of Katz provides an accurate description of cellular damage from heavy ion exposure. The track model is applied with BRYNTRN to provide a LET decomposition of survival and transformation rates for solar proton events. In addition, a fluence-based risk coefficient formalism is used to estimate Harderian gland-tumor induction in rodents and cataractogenesis in rabbits from solar flares, and a LET analysis is used to assess the relative contribution from target fragments on these biological endpoints.
Document ID
19920039147
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Cucinotta, Francis A.
(NASA Langley Research Center Hampton, VA, United States)
Wilson, John W.
(NASA Langley Research Center Hampton, VA, United States)
Townsend, Lawrence W.
(NASA Langley Research Center Hampton, VA, United States)
Shinn, Judy L.
(NASA Langley Research Center Hampton, VA, United States)
Katz, Robert
(Nebraska, University Lincoln, United States)
Date Acquired
August 15, 2013
Publication Date
July 1, 1991
Subject Category
Life Sciences (General)
Report/Patent Number
SAE PAPER 911355
Accession Number
92A21771
Distribution Limits
Public
Copyright
Other

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