Abstract
Relaxation phenomena show up in standard energy-domain Mössbauer spectra via line broadening. The evaluation of such spectra is in most cases done by applying the stochastic theory of lineshape mainly developed in the 60's and 70's. Due to the time structure and the polarization of the synchrotron radiation nuclear resonance forward scattering in the time domain gives valuable additional information on relaxation mechanisms. We report here mainly on Nuclear Forward Scattering (NFS) experiments, investigating the paramagnetic relaxation of high-spin Fe2+ and Fe2+ ions, superparamagnetic relaxation and briefly on recent investigations of charge fluctuations in Eu3S4.
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Leupold, O., Winkler, H. Relaxation experiments with synchrotron radiation. Hyperfine Interactions 123, 571–593 (1999). https://doi.org/10.1023/A:1017088310529
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DOI: https://doi.org/10.1023/A:1017088310529