Jahn-Teller effect in Rydberg series: a multi-state vibronic coupling problem

A. Staib, W. Domcke, A. L. Sobolewski

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19 Scopus citations

Abstract

Two simple limiting cases of Jahn-Teller (JT) coupling in Rydberg states of polyatomic molecules are considered, namely (i) JT coupling in Rydberg orbitals as well as in the ionization continuum (nondegenerate ion core, degenerate Rydberg series) and (ii) JT coupling in the ion core (degenerate ion core, nondegenerate Rydberg series). For both models simple and efficient algorithms for the computation of spectra (dynamical JT effect) are developed. The orbital JT effect is shown to represent a novel type of multi-state vibronic coupling, giving rise to interesting spectroscopic phenomena, among them resonant inter-Rydberg perturbations and JT induced autoionization. Particular attention is paid to the demonstration of the characteristic spectroscopic signatures of the two types of JT coupling in Rydberg states.

Original languageEnglish
Pages (from-to)49-60
Number of pages12
JournalZeitschrift fur Physik D-Atoms Molecules and Clusters
Volume16
Issue number1
DOIs
StatePublished - Mar 1990

Keywords

  • 33.10.Lb
  • 33.80.Eh
  • 33.80.Rv

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