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Martian regolith as space radiation shieldingMars exploration crews will be exposed to such high radiation dosages in route from earth that as to sharply reduce the allowable dose they should receive while on the Martian surface. An account is presently given of the possibility of using Martian regolith as crew shielding to maintain very low short-term dose limits. NASA-Langley's nucleon and heavy-ion transport computer codes are used to predict the propagation and interaction of the free-space nucleons and heavy ions through the Martian atmosphere and then through various thicknesses of regolith. The largest reduction in dose occurs in the first 15-20 cm of regolith material.
Document ID
19910048753
Document Type
Reprint (Version printed in journal)
Authors
Simonsen, L. C. (NASA Langley Research Center Hampton, VA, United States)
Nealy, J. E. (NASA Langley Research Center Hampton, VA, United States)
Townsend, L. W. (NASA Langley Research Center Hampton, VA, United States)
Wilson, J. W. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 14, 2013
Publication Date
February 1, 1991
Publication Information
Publication: Journal of Spacecraft and Rockets
Volume: 28
ISSN: 0022-4650
Subject Category
LUNAR AND PLANETARY EXPLORATION
Distribution Limits
Public
Copyright
Other