Intensities of Mössbauer diffractions from polycrystalline bcc Fe-57

摘要: Diffraction patterns were measured on a polycrystalline bcc 57Fe foil using Mossbauer powder diffractometer with high sensitivity. Measurements and without magnetic field normal to the scattering plane showed large differences in diffracted intensities of different nuclear resonances. These effects diffraction interpreted successfully single theory developed handle isotropic anisotropic orientation distributions hyperfine fields. When there is coherent interference between x-ray Rayleigh scattering, an asymmetry intensity three pairs diffractions for sextet (1,6), (2,5), (3,4) predicted. This largest presence uniaxial field, calculated asymmetries good agreement. A reduced lines (2,5) caused by spin-flip incoherence was also measured. The dynamical diffraction, if present, are shown be small.