Multiple excitations of atomic electrons
- 1 May 1987
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America B
- Vol. 4 (5) , 775-783
- https://doi.org/10.1364/josab.4.000775
Abstract
The development of nonperturbative techniques to deal with multiple-electron perturbations in atomic spectra is reviewed. Through the joint use of quantum-defect theory and of a finite-volume channel interaction method, numerous spectral regularities have emerged. The analysis of hyperspherical coordinate maps for many-electron atoms extends many of our intuitive notions about separable systems to strongly correlated electron motion, which is inherently nonseparable.Keywords
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