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Krypton and xenon in the atmosphere of VenusThe paper reports a determination by the Pioneer Venus large probe neutral mass spectrometer of upper limits to the concentration of krypton and xenon along with most of their isotopes in the atmosphere of Venus. The upper limit to the krypton mixing ratio is estimated at 47 ppb, with a very conservative estimate at 69 ppb. The probable upper limit to the sum of the mixing ratios of the isotopes Xe-128, Xe-129, Xe-130, Xe-131, and Xe-132 is 40 ppb by volume, with a very conservative upper limit three times this large.
Document ID
19810051400
Document Type
Reprint (Version printed in journal)
Authors
Donahue, T. M. (Michigan, University Ann Arbor, Mich., United States)
Hoffman, J. H. (Michigan Univ. Ann Arbor, MI, United States)
Hodges, R. R., Jr. (Texas, University Richardson, Tex., United States)
Date Acquired
August 11, 2013
Publication Date
May 1, 1981
Publication Information
Publication: Geophysical Research Letters
Volume: 8
Subject Category
LUNAR AND PLANETARY EXPLORATION
Funding Number(s)
CONTRACT_GRANT: NAS2-9126
CONTRACT_GRANT: NAGW-64
Distribution Limits
Public
Copyright
Other