Measurement of the transition probability of the C III 190.9 nanometer intersystem line

Details Measurement of the transition probability of the C III 190.9 nanometer intersystem line Measurement of the transition probability of the C III 190.9 nanometer intersystem line

Jul 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...411..431k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 411, no. 1, p. 431-437.

Mathematics

Probability

44

Carbon Monoxide, Electron Bombardment, Electron Transitions, Ion Charge, Positive Ions, Transition Probabilities, Astronomical Spectroscopy, Charge Transfer, Fine Structure, Forbidden Transitions, Line Spectra

Scientific paper

A 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.

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