The nondipole parameters that characterize the angular distribution of the photoelectrons from the 3d subshell of Cs are found to be altered significantly by the inclusion of correlation in the form of interchannel coupling between the 3d3/2 and 3d5/2 photoionization channels. A prominent characteristic maximum is predicted only in the parameters for 3d5/2 photoionization, while the effect for 3d3/2 is rather weak. The results are obtained within the framework of the generalized random-phase approximation with exchange (GRPAE), which in addition to the RPAE effects takes into account the rearrangement of all atomic electrons due to the creation of a 3d vacancy.
Physical Review A
- Pub Date:
- June 2003
- Photoionization of atoms and ions;
- Potential energy surfaces;
- Auger effect and inner-shell excitation or ionization;
- Physics - Atomic Physics