NDLI: Radiation shielding optimization on mars

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Radiation shielding optimization on mars

Content Provider	NASA Technical Reports Server (NTRS)
Author	Mertens, Chris J. Slaba, Tony C. Blattnig, Steve R.
Copyright Year	2013
Description	Future space missions to Mars will require radiation shielding to be optimized for deep space transit and an extended stay on the surface. In deep space, increased shielding levels and material optimization will reduce the exposure from most solar particle events (SPE) but are less effective at shielding against galactic cosmic rays (GCR). On the surface, the shielding provided by the Martian atmosphere greatly reduces the exposure from most SPE, and long-term GCR exposure is a primary concern. Previous work has shown that in deep space, additional shielding of common materials such as aluminum or polyethylene does not significantly reduce the GCR exposure. In this work, it is shown that on the Martian surface, almost any amount of aluminum shielding increases exposure levels for humans. The increased exposure levels are attributed to neutron production in the shield and Martian regolith as well as the electromagnetic cascade induced in the Martian atmosphere. This result is significant for optimization of vehicle and shield designs intended for the surface of Mars.
File Size	1274417
Page Count	17
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20130012456
Archival Resource Key	ark:/13960/t5m956x67
Language	English
Publisher Date	2013-04-01
Access Restriction	Open
Subject Keyword	Space Radiation Solar Flares Space Missions Deep Space Planetary Geology Galactic Cosmic Rays Radiation Shielding Solar Corpuscular Radiation Regolith Mars Missions Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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