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VUV dissociative excitation cross sections of H2O, NH3, and CH4 by electron impactAbsolute excitation functions for excited fragments resulting from electron bombardment of H2O, NH3, and CH4 by low-energy electrons (0 to 300 eV) have been measured in the vacuum ultraviolet (1100 to 1950 A). The predominant emission for each molecule was the H Lyman-alpha line, while the O I, N I, C I, and C II emissions were at least an order of magnitude weaker. Absolute cross sections at 100 eV are given along with the appearance potential of the various processes and the possible dissociative-excitation channels through which such processes proceed.
Document ID
19740053731
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Morgan, H. D.
(Howard University Washington, D.C., United States)
Mentall, J. E.
(NASA Goddard Space Flight Center Laboratory for Extraterrestrial Physics, Greenbelt, Md., United States)
Date Acquired
August 7, 2013
Publication Date
June 15, 1974
Publication Information
Publication: Journal of Chemical Physics
Volume: 60
Subject Category
Physics, Atomic, Molecular, And Nuclear
Accession Number
74A36481
Distribution Limits
Public
Copyright
Other

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