Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
11029579 | Journal of Electron Spectroscopy and Related Phenomena | 2018 | 22 Pages |
Abstract
The KLL Auger electron spectra of Zr (Zâ=â40) and Nb (Zâ=â41) following respectively the electron capture (EC) decay of 90Nb and the de-excitation of the isomeric state of 91mNb were investigated in detail using a combined electrostatic electron spectrometer and radioactive sources prepared by surface sorption on a polycrystalline carbon substrate. For both elements, energies, relative intensities, and natural widths of all the nine well-resolved basic spectrum components were determined and compared with theoretical predictions and with results of previous measurement as well. Results of our ab initio multiconfiguration Dirac-Hartree-Fock calculations are discussed also in relation to the solid-state effect. Indications of an influence of the EC decay on the absolute energy of the KL2L3(1D2) transition (so-called atomic structure effect) in Zr were found. The effect of the retarded current-current interaction on the KL1L2(3P0) transition intensity was observed to be appreciable for the investigated elements in accordance with the prediction.
Related Topics
Physical Sciences and Engineering
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Physical and Theoretical Chemistry
Authors
Ð.Kh. Inoyatov, A. KovalÃk, L.L. Perevoshchikov, D.V. Filosofov, J. Ekman, D. Vénos, T.M. Muminov, V. Radchenko, V.S Zhdanov,