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Measurement of the transition probability of the C III 190.9 nanometer intersystem lineA radio-frequency ion trap has been used to store C(2+) ions created by electron bombardment of CO. The transition probability for the 2s2p 3Po1-2s2 1S0 intersystem line of C m has been measured by recording the radiative decay at 190.9 nm. The measured A-value is 121 +/- 7/s and agrees, within mutual uncertainty limits, with that of Laughlin et al. (1978), but is 20 percent larger than that of Nussbaumer and Storey (1978). The effective collision mixing rate coefficient among the fine structure levels of 3Po and the combined quenching and charge transfer rate coefficients out of the 3Po1 level with the CO source gas have also been measured.
Document ID
19930057647
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Kwong, Victor H. S.
(NASA Headquarters Washington, DC United States)
Fang, Z.
(NASA Headquarters Washington, DC United States)
Gibbons, T. T.
(Nevada Univ. Las Vegas, United States)
Parkinson, W. H.
(NASA Headquarters Washington, DC United States)
Smith, Peter L.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Date Acquired
August 16, 2013
Publication Date
July 1, 1993
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 411
Issue: 1
ISSN: 0004-637X
Subject Category
Atomic And Molecular Physics
Accession Number
93A41644
Funding Number(s)
CONTRACT_GRANT: NAGW-1687
CONTRACT_GRANT: NSF RII-84-10674
Distribution Limits
Public
Copyright
Other

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