Determination of the electric field gradient and the magnetic field in Mössbauer spectroscopy★
University of Białystok, Faculty of Physics,
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Received in final form: 9 September 2018
Published online: 21 November 2018
Problem of unambiguous determination of all components of the electric field gradient and hyperfine magnetic field in case of mixed hyperfine interaction was solved for the first time. Concept of a new method to determine orientation of hyperfine fields in the absorber Cartesian frame for Mössbauer spectroscopy for nuclear transitions between levels with spin 3/2 and 1/2 is presented. The method can be applied for single-crystal absorbers with well separated absorption lines in their spectra. Explicit formulas derived from velocity moments are presented. The new method allows full separation of the electric quadrupolar and magnetic dipolar hyperfine interactions by using unpolarized radiation.
Key words: Solid State and Materials
Supplementary material in the form of one PDF file available from the Journal web page at https://doi.org/10.1140/epjb/e2018-90379-x
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