Physics
Scientific paper
Jan 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aipc..217..531n&link_type=abstract
Proceedings of the eighth symposium on space nuclear power systems. AIP Conference Proceedings, Volume 217, pp. 531-536 (1991).
Physics
Lunar, Planetary, And Deep-Space Probes
Scientific paper
A conceptual manned mission to Mars is analyzed in order to estimate potential ionizing radiation doses that may be incurred by crew members during the course of the mission. The scenario is set for a journey during the solar active period and includes a brief stay on the Martian surface. Propulsion is assumed to be provided by nuclear thermal rocket power, and estimates of the dose contributions from the reactors are included. However, due to effective shielding of the reactors by large propellant tanks, it is found that the incurred doses are principally due to the charged particle natural environment. Recent data (August-December 1989) for large solar proton events are used to simulate the flare environment, while standard models are used for the trapped particle and galactic cosmic ray contributions. Shield effectiveness for several candidate materials are investigated.
Gates Michele M.
Nealy John E.
Qualls Garry D.
Schnitzler Bruce G.
Simonsen Lisa C.
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