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Correlative multielectron processes in K-shell photoionization of Ca, Ti and V in the energy range of 8 35 keV
- Source :
- Journal of Physics B: Atomic, Molecular and Optical Physics. 35:3847-3863
- Publication Year :
- 2002
- Publisher :
- IOP Publishing, 2002.
-
Abstract
- The Kalpha satellite spectra arising from the correlative multielectron processes accompanying K-shell photoionization of Ca, Ti and V were measured using a broad range crystal spectrometer. Multiconfiguration Dirac-Fock calculations were performed to interpret the observed,x-ray energies and the spectral line shape., The calculations agree fairly well with the experimental results. The variation of the KalphaL(1) satellite and the Kalpha(1,2)(h) hypersatellite intensities was measured as a function, of excitation energy in the range of 8-35 keV. The KalphaL(1)/Kalpha(1,2) intensity ratio for each,element is already saturated in our energy range, and the asymptotic values of 1.58 +/- 0.08, 1.26 +/- 0.06 and 0.97 +/- 0.05% for Ca, Ti. and V were determined. By combining the present results and the previously measured values for various elements, we have found a Z(-3.5) scaling law for the KalphaL(1)/Kalpha(1,2) intensity ratio, The measured Kalpha(1,2)(h)/Kalpha(1,2) for each element, is found to increase smoothly from its onset and shows a long saturation range extending up to at least 25 keV above the threshold for Ti. The evolution of the Kalpha(1,2)(h)/Kalpha(1,2) intensity ratio is compared with the analytic Thomas model and with the theoretical calculation based on the screened hydrogenic model. (Less)
Details
- ISSN :
- 09534075
- Volume :
- 35
- Database :
- OpenAIRE
- Journal :
- Journal of Physics B: Atomic, Molecular and Optical Physics
- Accession number :
- edsair.doi...........0e59acbbc2b88f3c86d396dd4e521ac0