Department of Physics and Astronomy: Publications and Other Research
Document Type
Article
Date of this Version
January 1987
Abstract
The role of electron correlations in nonresonant multiphoton processes of atoms is presented. The evidence for the validity of a lowest order perturbation theory (LOPT) approach for the laser field in the case of nonresonant processes is sketched. The growing consensus for a LOPT interpretation of even the multiply-charged ion spectra obtained with high intensity lasers is reviewed. Finally, a review of those specific electron correlation processes within LOPT that are important for the quantitative prediction of two-photon ionization cross sections is presented and some of their effects on calculated generalized cross sections are exhibited.
Comments
Published in Physica Scripta (Topical Issue) Vol. T17 (1987), pp. 221–227: Proceedings of The 8th International Conference on Vacuum Ultraviolet Radiation Physics, Lund Sweden, August 4–8, 1986, edited by Per-Olof Nilsson and Joseph Nordgren. Copyright © 1987 Royal Swedish Academy of Sciences; published by Institute of Physics Publishing. Used by permission.