The Oscillator Strengths of the C 2 Phillips System

Details The Oscillator Strengths of the C 2 Phillips System The Oscillator Strengths of the C 2 Phillips System

Sep 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...450l..31e&link_type=abstract

Astrophysical Journal Letters v.450, p.L31

Astronomy and Astrophysics

Astronomy

19

Ism: Abundances, Ism: Molecules, Molecular Processes

Scientific paper

Radiative lifetimes of the C2 A1IIu--X1 Sigma ^{+}g (Phillips) system have been remeasured using the High-Frequency Deflection technique. Using catalyzer gases, it is shown that collisional transfer effects are present which tend to lengthen the registered lifetimes, yielding too low f-values. The remeasured value f^{A-X}_{2,0} = (1.36 +/- 0.15) x 10-3 is 45%--75% larger than earlier laboratory experiments and agrees within the error limits with recent results obtained from spectra of zeta Oph as well as ab initio calculations.

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