Computer Science
Scientific paper
Oct 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998nasa.rept.....k&link_type=abstract
Technical Report, NASA/TP-1998-208724; NAS 1.60:208724; L-17722
Computer Science
Shielding, Solar Activity Effects, Mars (Planet), Galactic Cosmic Rays, Extraterrestrial Radiation, Radiation Distribution, Snc Meteorites, Signatures, Regolith, Mars Surface, Epoxy Resins, Environment Models, Boltzmann Transport Equation
Scientific paper
Theoretical calculations of radiation attenuation due to energetic galactic cosmic rays behind Martian rock and Martian regolith material have been made to compare their utilization as shields for advanced manned missions to Mars because the detailed chemical signature of Mars is distinctly different from Earth. The modified radiation fields behind the Martian rocks and the soil model were generated by solving the Boltzmann equation using a HZETRN system with the 1977 Solar Minimum environmental model. For the comparison of the attenuation characteristics, dose and dose equivalent are calculated for the five different subgroups of Martian rocks and the Martian regolith. The results indicate that changes in composition of subgroups of Martian rocks have negligible effects on the overall shielding properties because of the similarity of their constituents. The differences for dose and dose equivalent of these materials relative to those of Martian regolith are within 0.5 and 1 percent, respectively. Therefore, the analysis of Martian habitat construction options using in situ materials according to the Martian regolith model composition is reasonably accurate. Adding an epoxy to Martian regolith, which changes the major constituents of the material, enhances shielding properties because of the added hydrogenous constituents.
Kim Myung-Hee Y.
Simonsen Lisa C.
Thibeault Sheila A.
Wilson William J.
No associations
LandOfFree
Comparison of Martian Meteorites and Martian Regolith as Shield Materials for Galactic Cosmic Rays does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Comparison of Martian Meteorites and Martian Regolith as Shield Materials for Galactic Cosmic Rays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Comparison of Martian Meteorites and Martian Regolith as Shield Materials for Galactic Cosmic Rays will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1099928