Evolution from Threshold of a Hollow Atom's X-Ray Emission Spectrum: The Cu K{sup h}{alpha}{sub 1,2} Hypersatellites

Journal Article · Mon Apr 10 04:00:00 EDT 2000 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.84.3278· OSTI ID:20216121

Diamant, R ^[1]; Huotari, S ^[2]; Haemaelaeinen, K ^[2]; Kao, C C ^[3]; Deutsch, M ^[1]

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1. Physics Department, Bar-Ilan University, Ramat-Gan 52900, (Israel)
2. Physics Department, FIN-00014 University of Helsinki, Helsinki, (Finland)
3. NSLS, Brookhaven National Laboratory, Upton, New York 11973 (United States)

The first pure high-resolution photoexcited K{sup h}{alpha}{sub 1,2} hypersatellite spectrum from a hollow Cu atom is measured. Its K{sup h}{alpha}{sub 2} -K{alpha}{sub 1} shift and the K{sup h}{alpha}{sub 1,2} lines' splitting, widths, and intensity ratio are accurately determined. Such spectra are uniquely suited to study relativistic correlation effects, transition from LS to intermediate coupling, and the Breit-Wigner interaction. The threshold energy and the spectrum's evolution with excitation energy are also measured. The roles of relativity and Breit interaction are explored by comparison with ab initio Dirac-Fock calculations. (c) 2000 The American Physical Society.

• OSTI ID: 20216121
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 15 Vol. 84; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
BREIT-WIGNER FORMULA
COPPER
EXPERIMENTAL DATA
RELATIVISTIC RANGE
X-RAY SPECTRA