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The composition of the upper atmosphereMiniature mass spectrometers were developed and were carried on sounding rockets to determine the composition of the upper atmosphere. Techniques have been developed that accurately correct for the velocity and spin of the moving vehicle. Above 120 km N2, O2, and Ar appear to be in diffusive equilibrium. Most He concentration measurements show a more rapid decline with altitude than predicted by diffusive equilibrium. Because of the highly reactive nature of atomic oxygen, measurements of this species by mass spectrometry are low by an unknown factor.
Document ID
19720023741
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Nier, A. O. (Minnesota Univ. Minneapolis, MN, United States)
Date Acquired
August 6, 2013
Publication Date
January 1, 1972
Publication Information
Publication: NASA, Washington Phys. of the Space Environment
Subject Category
Geophysics
Accession Number
72N31391
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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