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Rocket observation of the N II 2143 A emission in an auroraUsing a rocket-mounted spectrometer with a multichannel detector, the existence of the N II 2143 A doublet in the auroral ultraviolet spectrum was confirmed. The measured intensity is in agreement with previous auroral observations and is consistent with a peak electron-impact cross section of 1-2 x 10 to the -18th sq cm. By comparing an altitude profile of the 2143 A emission to the N2(+) 3914 A emission, a deactivation rate for the N(+)(5S) state was obtained. The most likely quencher is N2, although the possibility of a reaction with O2 cannot be ruled out. For N2, the deduced value of the quenching coefficient equals 5.5 x 10 to the -10th cu cm/s.
Document ID
19870052612
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Siskind, David E.
(Colorado Univ. Boulder, CO, United States)
Barth, Charles A.
(Colorado, University Boulder, United States)
Date Acquired
August 13, 2013
Publication Date
April 1, 1987
Publication Information
Publication: Geophysical Research Letters
Volume: 14
ISSN: 0094-8276
Subject Category
Geophysics
Accession Number
87A39886
Funding Number(s)
CONTRACT_GRANT: NSG-5103
Distribution Limits
Public
Copyright
Other

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