The experimental investigation of weak effects in the KLL Auger electron spectrum of Zr and Nb generated in radioactive decay

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The experimental investigation of weak effects in the KLL Auger electron spectrum of Zr and Nb generated in radioactive decay

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Publication Article, peer reviewed scientific
Title The experimental investigation of weak effects in the KLL Auger electron spectrum of Zr and Nb generated in radioactive decay
Author Inoyatov, A. Kh. ; Kovalik, A. ; Perevoshchikov, L. L. ; Filosofov, D. V. ; Ekman, Jörgen ; Venos, D. ; Muminov, T. M. ; Radchenko, V. ; Zhdanov, V. S.
Date 2018
English abstract
The KLL Auger electron spectra of Zr (Z = 40) and Nb (Z = 41) following respectively the electron capture (EC) decay of Nb-90 and the de-excitation of the isomeric state of Nb-91m 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 multieonfiguration 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(D-1(2)) transition (so-called atomic structure effect) in Zr were found. The effect of the retarded current-current interaction on the KL1L2(P-3(0)) transition intensity was observed to be appreciable for the investigated elements in accordance with the prediction.
DOI https://doi.org/10.1016/j.elspec.2018.08.004 (link to publisher's fulltext.)
Publisher Elsevier
Host/Issue Journal of Electron Spectroscopy and Related Phenomena;
Volume 229
ISSN 0368-2048
Language eng (iso)
Subject Zr-90
Nb-90
Nb-91m
KLL Auger transitions
Atomic structure effect
Multiconfiguration Dirac-Hartree-Fock
calculations
Technology
Research Subject Categories::TECHNOLOGY
Handle http://hdl.handle.net/2043/29539 Permalink to this page
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