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Record Details

Record 3 of 6704
Estimates of Sputter Yields of Solar-Wind Heavy Ions of Lunar Regolith Materials
Author and Affiliation:
Barghouty, Abdulmasser F.(NASA Marshall Space Flight Center, Huntsville, AL, United States)
Adams, James H., Jr.(NASA Marshall Space Flight Center, Huntsville, AL, United States)
Abstract: At energies of approximately 1 keV/amu, solar-wind protons and heavy ions interact with the lunar surface materials via a number of microscopic interactions that include sputtering. Solar-wind induced sputtering is a main mechanism by which the composition of the topmost layers of the lunar surface can change, dynamically and preferentially. This work concentrates on sputtering induced by solar-wind heavy ions. Sputtering associated with slow (speeds the electrons speed in its first Bohr orbit) and highly charged ions are known to include both kinetic and potential sputtering. Potential sputtering enjoys some unique characteristics that makes it of special interest to lunar science and exploration. Unlike the yield from kinetic sputtering where simulation and approximation schemes exist, the yield from potential sputtering is not as easy to estimate. This work will present a preliminary numerical scheme designed to estimate potential sputtering yields from reactions relevant to this aspect of solar-wind lunar-surface coupling.
Publication Date: Sep 09, 2008
Document ID:
20090014845
(Acquired Apr 16, 2009)
Subject Category: LUNAR AND PLANETARY SCIENCE AND EXPLORATION
Report/Patent Number: MSFC-2176
Document Type: Conference Paper
Meeting Information: American Geophysical Union Fall Meeting 2008; 15-19 Dec. 2008; San Francisco, CA; United States
Financial Sponsor: NASA Marshall Space Flight Center; Huntsville, AL, United States
Organization Source: NASA Marshall Space Flight Center; Huntsville, AL, United States
Description: 1p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: SOLAR WIND; SPUTTERING; HEAVY IONS; REGOLITH; LUNAR SURFACE; LUNAR EXPLORATION; SOLAR PLANETARY INTERACTIONS
Availability Source: Other Sources
Availability Notes: Abstract Only
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