QED Corrections of {ital O}({ital mc}{sup 2}{alpha}{sup 7}ln{alpha}) to the Fine Structure Splittings of Helium and He-like Ions
- Department of Physics, University of Windsor, Windsor, Ontario, N9B 3P4 (CANADA)
A reformulation of the external potential Bethe-Salpeter formalism is developed for two-electron atoms. QED and relativistic corrections to energy levels of order {alpha}{sup 7}{ital mc}{sup 2}ln{alpha} are derived and expressed in terms of expectation values of nonrelativistic operators. Corrections of order {alpha}{sup 7}{ital mc}{sup 2} from exchange diagrams are also found. The total contributions of order {alpha}{sup 7}{ital mc}{sup 2}ln{alpha} to the 1{ital s}2{ital p}{sup 3}{ital P}{sub {ital J}} fine structure intervals of helium are {Delta}{nu}{sub 01}=82.6 kHz and {Delta}{nu}{sub 12}={minus}10.0 kHz. Results are given for He-like ions up to {ital Z}=12 and compared with experiment. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 383297
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 9 Vol. 77; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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