ROTATIONALLY RESOLVED SPECTROSCOPY OF THE ELECTRONICALLY EXCITED C AND D STATES OF {ArXe} AND {KrXe}
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Date
2011
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Publisher
Ohio State University
Abstract
Rotationally resolved (1+1') resonance-enhanced two-photon ionization spectra of the D and C $\leftarrow$ X\,$0^+$ band systems of several isotopomers of ArXe and KrXe were recorded using a narrow-bandwidth VUV laser system, \emph{Rev. Sci. Instr.} \textbf{71}, 4023 (2000).} at a resolution of 0.01 cm${}^{-1}$ in the wave number range from 77000 cm${}^{-1}$ to 77400 cm${}^{-1}$, \emph{J. Mol. Spectrosc.} \textbf{264}, 83 (2010).}. The analysis of the rotational structures enabled the characterization of the dissociation of the $\Omega$ = 1 states of ArXe and KrXe, \emph{J. Chem. Phys.} \textbf{108}, 5330 (1998).}. In the case of Rg$^{129}$Xe and Rg$^{131}$Xe (Rg=Ar, Kr), the hyperfine structure could also be resolved and provided new information on these states, and on the nature of the perturbations, \emph{J. Chem. Phys.} \textbf{96}, 2099 (1992).}${}^{,}$, \emph{J. Phys. B} \textbf{29}, L89 (1996).}. Model potentials for the perturbing and perturbed excited states were constructed in an attempt to rationalize the spectroscopic data. The spectra of the C and D states of ArXe and KrXe reveal strong perturbations${}^{(c-e)}$, and are subject to slow predissociation.
Description
Author Institution: ETH Zurich, Laboratorium fur Physikalische Chemie; Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland