1. Khα1,2 hypersatellites of 3d transition metals and their photoexcitation energy dependence
- Author
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University of Helsinki, Department of Physics, University of Helsinki, Rectors, Diamant, R., Huotari, S., Hämäläinen, K., Sharon, R., Kao, C. C., Deutsch, M., University of Helsinki, Department of Physics, University of Helsinki, Rectors, Diamant, R., Huotari, S., Hämäläinen, K., Sharon, R., Kao, C. C., and Deutsch, M.
- Abstract
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.
- Published
- 2009