Journal
PHYSICAL REVIEW A
Volume 79, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.79.062511
Keywords
chromium; cobalt; copper; inner-shell ionisation; iron; manganese; nickel; photoexcitation; photoionisation; quantum electrodynamics; radiative corrections; vanadium; X-ray spectra; zinc
Categories
Funding
- The Israel Science Foundation, Jerusalem
- Academy of Finland [201291, 205967]
- U.S. DOE [DE-AC0276CH00016]
- Academy of Finland (AKA) [201291, 205967, 201291, 205967] Funding Source: Academy of Finland (AKA)
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Hollow atoms in which the K shell is empty while the outer shells are populated allow studying a variety of important and unusual properties of atoms. The diagram x-ray emission lines of such atoms, the K-h alpha(1,2) hypersatellites (HSs), were measured for the 3d transition metals, Z=23-30, with a high energy resolution using photoexcitation by monochromatized synchrotron radiation. Good agreement with ab initio relativistic multiconfigurational Dirac-Fock calculations was found. The measured HS intensity variation with the excitation energy yields accurate values for the excitation thresholds, excludes contributions from shake-up processes, and indicates domination near threshold of a nonshake process. The Z variation of the HS shifts from the diagram line K alpha(1,2), the K-h alpha(1)-K-h alpha(2) splitting, and the K-h alpha(1)/K-h alpha(2) intensity ratio, derived from the measurements, are also discussed with a particular emphasis on the QED corrections and Breit interaction.
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