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Radiation Physics for Space and High Altitude Air TravelGalactic cosmic rays (GCR) are of extra-solar origin consisting of high-energy hydrogen, helium, and heavy ions. The GCR are modified by physical processes as they traverse through the solar system, spacecraft shielding, atmospheres, and tissues producing copious amounts of secondary radiation including fragmentation products, neutrons, mesons, and muons. We discuss physical models and measurements relevant for estimating biological risks in space and high-altitude air travel. Ambient and internal spacecraft computational models for the International Space Station and a Mars mission are discussed. Risk assessment is traditionally based on linear addition of components. We discuss alternative models that include stochastic treatments of columnar damage by heavy ion tracks and multi-cellular damage following nuclear fragmentation in tissue.
Document ID
20000083354
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Cucinotta, F. A.
(NASA Johnson Space Center Houston, TX United States)
Wilson, J. W.
(NASA Langley Research Center Hampton, VA United States)
Goldhagen, P.
(Department of Energy New York, NY United States)
Saganti, P.
(NASA Johnson Space Center Houston, TX United States)
Shavers, M. R.
(NASA Johnson Space Center Houston, TX United States)
McKay, Gordon A.
Date Acquired
August 19, 2013
Publication Date
January 1, 2000
Subject Category
Space Radiation
Meeting Information
Meeting: 11th International Congress on Radiation Res.
Location: Dublin
Country: Ireland
Start Date: July 11, 2000
End Date: July 15, 2000
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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