NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Laboratory simulation of meteoritic noble gases. I - Sorption of xenon on carbon: Trapping experimentsThe sorption of Xe-127 at 5 x 10 to the -7th atm onto carbon black, pyrolyzed polyvinylidene chloride, and pyrolyzed acridine at 100-1000 C for 5 min-240 h is measured experimentally by gamma spectrometry. The results are presented in tables and graphs and characterized in detail. The tightly bound Xe remaining in the samples after 4000 min pumping at temperatures above 100 C is found to comprise two components: a low-temperature component attributed to physisorption within an atomic-scale labyrinth of micropores, and a high-temperature component due to volume diffusion. The implications for the trapping of noble gases near grain surfaces of amorphous carbon in meteorites are considered.
Document ID
19850054073
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Wacker, J. F.
(Chicago Univ. Chicago, IL, United States)
Zadnik, M. G.
(Chicago Univ. Chicago, IL, United States)
Anders, E.
(Chicago, University Chicago, IL, United States)
Date Acquired
August 12, 2013
Publication Date
April 1, 1985
Publication Information
Publication: Geochimica et Cosmochimica Acta
Volume: 49
ISSN: 0016-7037
Subject Category
Lunar And Planetary Exploration
Accession Number
85A36224
Funding Number(s)
CONTRACT_GRANT: NAG9-52
CONTRACT_GRANT: NSF EAR-82-12355
Distribution Limits
Public
Copyright
Other

Available Downloads

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