Abstract:The dispersed state of iron ions in LiF and NaF is studied by absorber Mossbauer spectroscopy for the first time. Crystals containing low concentrations of Fe57 and quenched from high temperatures show spectra consisting of symmetric quadrupole split doublets indicative of iron ions in a divalent charge state. The absorber spectra show marked differences with the corresponding source spectra of LiF : CoS7 and NaF : CoS7. Aftereffects of the decay of Co5' are believed to be responsible for the difference in sou… Show more
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