Name of the Journal:
Physical Review Letters
Proceedings, Conference, Subtitle or Series:
Proceedings of the International Conference on the Physics of X-Ray Spectra
Date of Pub:
October 18, 1976
Year of Publication:
1976
Volume:
37
Issue:
16
Pages:
1091-1094
Publisher Name, Address and Year:
American Physical Society
Abstract:
The Mahan, Nozières, De Dominicis theory of x-ray thresholds is extended to include exchange effects which are found to reduce threshold exponents and increase the orthogonality index. For the lithium K edge this represents an important previously neglected feature. Results of detailed numerical calculations of threshold exponents for Li are presented which differ considerably from previous values and which are in better agreement with edge data.
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