NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Solar wind record in the lunar regolith - Nitrogen and noble gasesThe measured elemental and isotopic abundances of noble gases and nitrogen have been measured in five different samples of lunar regolith material. It was found noble gases liberated by chemical attack on grain surfaces from two of the samples were solar. The Ne-20/Ne-22 ratio in the two grain surface reservoir is 13.5-13.6, compared to the average value of 13.7 + or - 0.3 measured in the Apollo solar wind collection foils (Gochsler and Geiss, 1977). It is suggested that the noble gases in grain interiors have suffered severe mass fractionation. The surface-sited N/Ar in an ilmenite sample exceeds the predicted solar ratio by more than a factor of 10. It is concluded that the solar system abundances of Cameron (1982) describe the elemental composition of the noble gases in the solar wind very well.
Document ID
19890023488
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Frick, Urs
(NAGRA Baden, Switzerland)
Becker, Richard H.
(Minnesota Univ. Minneapolis, MN, United States)
Pepin, Robert O.
(Minnesota, University Minneapolis, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1988
Subject Category
Lunar And Planetary Exploration
Meeting Information
Meeting: Lunar and Planetary Science Conference
Location: Houston, TX
Country: United States
Start Date: March 16, 1987
End Date: March 20, 1987
Accession Number
89A10859
Funding Number(s)
CONTRACT_GRANT: NGL-24-004-225
CONTRACT_GRANT: NAG9-60
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available