Experimental determination of the band oscillator strengths of the CO A(11v'23)-X(v"=0) made at the LURE-SuperACO synchrotron facility.
M. Eidelsberg 1,
A. Jolly 1,
J.L. Lemaire 1,2,
W.-ÜL. Tchang-Brillet 1,3,
J. Breton 4,5 and
F. Rostas 1
Received 10 August 1998 / Accepted 16 November 1998
The band-integrated absorption oscillator strengths of the CO A(11v'23)-X(v"=0) transition have been measured using monochromatized synchrotron radiation from the LURE-SuperACO facility as background source. The absorption spectra were analyzed using the simulation-fitting technique described in an earlier publication (Jolly et al. 1997). Up to v'=20, the results are in good agreement with very recent ab initio calculations (Spielfiedel et al. 1999) and VUV laser measurements(Stark et al. 1998). For v'=23 which is measured here for the first time, and for v'=21 the measured oscillator strengths are found to be significantly larger than the calculated ones. Combining experimental and calculated results, a set of recommended oscillator strengths is proposed.
Key words: molecular data ISM: molecules ultraviolet: ISM
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© European Southern Observatory (ESO) 1999
Online publication: May 21, 1999