Abstract
The Fe3+ fraction after the EC of57Co is usually evaluated supposing that ferric ions contribute a quadrupole doublet to Mössbauer emission spectra. It is shown that a not sufficiently fast relaxation of the electron spins may falsify the evaluated intensity even by a factor 2. Additional information can be gained from measurements performed in a large velocity span at low temperatures in high magnetic fields.
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Nagy, D.L., Doerfler, R., Molnár, B. et al. Evaluation of the Fe2+/Fe3+ ratio from57Co Mössbauer emission spectra: Influence of the relaxation of Fe3+ . Hyperfine Interact 16, 1051–1055 (1983). https://doi.org/10.1007/BF02147418
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DOI: https://doi.org/10.1007/BF02147418