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Hyperfine quadrupole splitting and mössbauer spectra for an orbital doublet
Author(s) -
Bersuker I. B.,
Borshch S. A.,
Ogurtsov I. Ya.
Publication year - 1973
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220590240
Subject(s) - hyperfine structure , quadrupole , spectral line , relaxation (psychology) , vibronic coupling , atomic physics , line (geometry) , quadrupole splitting , vibronic spectroscopy , coupling (piping) , chemistry , physics , basis (linear algebra) , quantum mechanics , materials science , excited state , geometry , psychology , social psychology , mathematics , metallurgy
A theoretical investigation is made of the effect of vibronic coupling on the line shapes of Mössbauer spectra in an orbital degenerated E‐term system including relaxation transitions among the vibronic states and magnetic hyperfine interaction. The vibronic interaction is taken into account in the limiting case of strong linear coupling and arbitrary second‐order contribution. The quadrupole splitting of the energy levels for a nuclear spin I = 3/2 and the transition probabilities for I = 1/2 → I = 3/2 transitions were obtained. The effect of relaxation transitions on the line shape is studied on the basis of a generalized Kubo‐Andersen model. For a set of actual relaxation and vibronic parameter values the Mössbauer spectra are calculated numerically with a computer. The possibilities of comparison with experiment are discussed.