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Composition of solar flare noble gases preserved in meteorite parent body regolithIsotopic composition of solar-flare (SF) Ne was determined in acid-etched pyroxene mineral separates from the Kapoeta meteorite, a brecciated meteorite known to contain implanted solar gases. The results yield the SF Ne-20/Ne-22 ratio of 11.6 +/-0.2, confirming previous determinations of this SF ratio in lunar and meteoritic samples. The same SF Ne composition was also obtained by applying an ordinate intercept technique to the same data set. The ordinate intercept technique was then applied to the Ar and He data. The results are SF Ar-36/Ar-38 = 4.9 +/-0.1 and SF He-4/He-3 = 3800 +/-200. These values are significantly different from the solar-wind (SW) Ar and He values. It is estimated that the concentration of the SF component in Kapoeta pyroxenes is about 20 percent that of the SW component, orders of magnitude higher than expected from SW and SF proton flux measurements.
Document ID
19920029432
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Rao, M. N.
(NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Garrison, D. H.
(NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Bogard, D. D.
(NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Badhwar, G.
(NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Murali, A. V.
(NASA Johnson Space Center Houston, TX, United States)
Date Acquired
August 15, 2013
Publication Date
November 1, 1991
Publication Information
Publication: Journal of Geophysical Research
Volume: 96
ISSN: 0148-0227
Subject Category
Solar Physics
Accession Number
92A12056
Distribution Limits
Public
Copyright
Other

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