Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5415321 | Journal of Molecular Spectroscopy | 2010 | 6 Pages |
Abstract
The potential of four-wave mixing spectroscopy in combination with a discharge slit-jet source is explored by performing an analysis of the perturbations occurring between vibronic levels of the d3Î g,vâ²=4 and b3Σg-,vâ²=16 states of C2. Unambiguous assignments of perturbed transitions are achieved by intermediate level labeling in the a3Î u state of the Swan system and results in the re-assignment of several line positions found in the literature. Furthermore, extra transitions are observed and assigned in a straightforward manner that originate from the perturbing b3Σg-,vâ²=16 electronic state. Significantly perturbed rotational transitions in the (4, 3) band of the Swan system are reported for the first time. A least-squares fit to 35 perturbed and perturbing transitions yields the vibronic origin, rotational and spin-spin coupling constant of the b3Σg-,vâ²=16 state as well as the spin-orbit and L-uncoupling parameters for the interaction between the d3Î g,vâ²=4 and b3Σg-,vâ²=16 states.
Keywords
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Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
P. Bornhauser, G. Knopp, T. Gerber, P.P. Radi,