Ultraviolet spectrum of the Aurora /2000-2800 A/
Ultraviolet spectra between 2000 and 2800 delta-v of an IBC II(+) aurora were obtained by a rocket-borne Ebert-Fastie monochromator at 15-A resolution over Fort Churchill, Manitoba. The v-prime = 0-8 progressions of the N2 Vegard-Kaplan system, the delta-v = 8 sequence of the Lyman-Birge-Hopfield sy...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19790049492 2023-05-15T15:55:07+02:00 Ultraviolet spectrum of the Aurora /2000-2800 A/ Beiting, E. J., III Feldman, P. D. Unclassified, Unlimited, Publicly available Apr 1, 1979 http://ntrs.nasa.gov/search.jsp?R=19790049492 unknown http://ntrs.nasa.gov/search.jsp?R=19790049492 Accession ID: 79A33505 Copyright Other Sources 46 Journal of Geophysical Research; 84; Apr. 1 1979 ftnasantrs 2012-02-15T13:53:04Z Ultraviolet spectra between 2000 and 2800 delta-v of an IBC II(+) aurora were obtained by a rocket-borne Ebert-Fastie monochromator at 15-A resolution over Fort Churchill, Manitoba. The v-prime = 0-8 progressions of the N2 Vegard-Kaplan system, the delta-v = 8 sequence of the Lyman-Birge-Hopfield system, and a progression attributed to the Herman-Kaplan system were identified by a synthetic spectrum analysis. Relative populations of the first eight vibrational levels of the A3 Sigma u(+) state at high altitude were obtained from the theoretically generated spectra, and quenching rate coefficients were derived for these eight levels by using an atomic oxygen concentration derived from data from another experiment on board. For v = 0 the quenching rate coefficient was found to be 2.0 times 10 the minus 10th cu cm/sec and was not found to increase for higher vibrational levels. The intensity of the (0,2) band of the Herman-Kaplan system was found to be about 5 times the theoretically predicted value, but even so, the cascade from E3 Sigma g(+) provides less than 2% of the A3 Sigma u(+) state population. Other/Unknown Material Churchill NASA Technical Reports Server (NTRS) Fort Churchill ENVELOPE(-94.079,-94.079,58.756,58.756) |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
46 |
spellingShingle |
46 Beiting, E. J., III Feldman, P. D. Ultraviolet spectrum of the Aurora /2000-2800 A/ |
topic_facet |
46 |
description |
Ultraviolet spectra between 2000 and 2800 delta-v of an IBC II(+) aurora were obtained by a rocket-borne Ebert-Fastie monochromator at 15-A resolution over Fort Churchill, Manitoba. The v-prime = 0-8 progressions of the N2 Vegard-Kaplan system, the delta-v = 8 sequence of the Lyman-Birge-Hopfield system, and a progression attributed to the Herman-Kaplan system were identified by a synthetic spectrum analysis. Relative populations of the first eight vibrational levels of the A3 Sigma u(+) state at high altitude were obtained from the theoretically generated spectra, and quenching rate coefficients were derived for these eight levels by using an atomic oxygen concentration derived from data from another experiment on board. For v = 0 the quenching rate coefficient was found to be 2.0 times 10 the minus 10th cu cm/sec and was not found to increase for higher vibrational levels. The intensity of the (0,2) band of the Herman-Kaplan system was found to be about 5 times the theoretically predicted value, but even so, the cascade from E3 Sigma g(+) provides less than 2% of the A3 Sigma u(+) state population. |
format |
Other/Unknown Material |
author |
Beiting, E. J., III Feldman, P. D. |
author_facet |
Beiting, E. J., III Feldman, P. D. |
author_sort |
Beiting, E. J., III |
title |
Ultraviolet spectrum of the Aurora /2000-2800 A/ |
title_short |
Ultraviolet spectrum of the Aurora /2000-2800 A/ |
title_full |
Ultraviolet spectrum of the Aurora /2000-2800 A/ |
title_fullStr |
Ultraviolet spectrum of the Aurora /2000-2800 A/ |
title_full_unstemmed |
Ultraviolet spectrum of the Aurora /2000-2800 A/ |
title_sort |
ultraviolet spectrum of the aurora /2000-2800 a/ |
publishDate |
1979 |
url |
http://ntrs.nasa.gov/search.jsp?R=19790049492 |
op_coverage |
Unclassified, Unlimited, Publicly available |
long_lat |
ENVELOPE(-94.079,-94.079,58.756,58.756) |
geographic |
Fort Churchill |
geographic_facet |
Fort Churchill |
genre |
Churchill |
genre_facet |
Churchill |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19790049492 Accession ID: 79A33505 |
op_rights |
Copyright |
_version_ |
1766390451499171840 |