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Solar Wind Implantation into Lunar Regolith II: Monte Carlo Simulations of Hydrogen Retention in a Surface with Defects and the Hydrogen (H, H2) ExosphereRecently, the near-infrared observations of the OH veneer on the lunar surface by the Moon Mineralogy Mapper (M3) have been refined to constrain the OH content to 500-750 parts per million (ppm). The observations indicate diurnal variations in OH up to 200 ppm possibly linked to warmer surface temperatures at low latitude. We examine the M3 observations using a statistical mechanics approach to model the diffusion of implanted H in the lunar regolith. We present results from Monte Carlo simulations of the diffusion of implanted solar wind H atoms and the subsequently derived H and H2 exospheres.
Document ID
20180002105
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Tucker, O. J.
(Universities Space Research Association Greenbelt, MD, United States)
Farrell, W. M.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Killen, R. M.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hurley, D. M.
(Johns Hopkins Univ. Laurel, MD, United States)
Date Acquired
March 26, 2018
Publication Date
March 19, 2018
Subject Category
Lunar And Planetary Science And Exploration
Report/Patent Number
GSFC-E-DAA-TN53696
LPI Contrib. No. 2083
Meeting Information
Meeting: Lunar and Planetary Science Conference
Location: The Woodlands, TX
Country: United States
Start Date: March 19, 2018
End Date: March 23, 2018
Sponsors: Lunar and Planetary Inst., NASA Johnson Space Center
Funding Number(s)
CONTRACT_GRANT: NNH15CO48B
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
Exosphere
Hydrogen
Lunar Regolith
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