Measurement of the two-photon spectral distribution from decay of the 1s2s;{sup 1}S{sub 0} level in heliumlike nickel
- Gesellschaft fuer Schwerionenforschung, D-64291 Darmstadt (Germany)
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
A measurement of the shape of the spectral distribution of two-photon decay of the 1s2s{sup 1}S{sub 0} level in heliumlike nickel is described. Uncertainties in detector efficiencies which had limited the precision of earlier measurements were eliminated by comparing the continuum emission from two-photon decays of H-like and He-like nickel. Our results are in agreement with the nonrelativistic calculation of Drake and the fully relativistic calculation of Derevianko and Johnson and suggest a method for testing relativistic atomic many-body theory in strong fields. {copyright} {ital 1999} {ital The American Physical Society}
- OSTI ID:
- 678824
- Journal Information:
- Physical Review A, Journal Name: Physical Review A Journal Issue: 1 Vol. 59; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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