Resonant x-ray Raman Scattering involving avoided crossings in the final-state potential-energy curves
Abstract
The role of avoided crossings for resonant x-ray Raman scattering is explored. The strong dependence of the electronic transition amplitudes on internuclear distance at avoided crossings causes new, and even anomalous, spectral features, and can bring about a breakdown of the generally accepted participator or spectator classification of the transitions. We report, and apply the theory on, an experimental observation of the electron decay of the N 1s-->π* core-excited level in N2 the B2Σ+u final state with peculiar, non-Franck-Condon, vibrational intensity distributions.
- Publication:
-
Physical Review A
- Pub Date:
- December 2000
- DOI:
- 10.1103/PhysRevA.62.062506
- Bibcode:
- 2000PhRvA..62f2506S
- Keywords:
-
- 33.20.Rm;
- 33.50.Dq;
- 33.70.-w;
- X-ray spectra;
- Fluorescence and phosphorescence spectra;
- Intensities and shapes of molecular spectral lines and bands