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Re-visiting the observation of the Delta v =-4 vibronic sequence of the C-2 Swan system

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Publication date 2013
Author Bornhauser P., Sych Y., Knopp G., Gerber T., Radi P. P.,
Project Spectroscopic Characterization of Radicals by Degenerate and Two-Color Resonant Four-Wave Mixing
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Original article (peer-reviewed)

Journal CHEMICAL PHYSICS LETTERS
Volume (Issue) 572
Page(s) 16 - 20
Title of proceedings CHEMICAL PHYSICS LETTERS
DOI 10.1016/j.cplett.2013.04.011

Abstract

We re-visit the analysis of the Δv=-4 vibronic sequence of the C2 Swan system published recently by Yeung et al. [1] in which the heavily perturbed (4,8) band could not be assigned and analyzed satisfactorily. Here, we outline the assignment of 122 transitions of the band by taking into account a recent deperturbation study of the d 3Pig, v=4 level by Bornhauser et al. [2]. Improved molecular constants for the a 3Piu, v=8 and View the d3Pig, v=4 states are presented by performing a least-squares fit to the Hamiltonian with a favorable root-mean square error of 0.012 cm−1.
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