The Scattering Resonance Cross-Section for Non-Axial Symmetric Hyperfine Interaction Including an Anisotropic Debye-Waller-Factor

M�ssbauer conversion spectroscopy: Measurements on the first excited states of180, 182W and145Pm

“…Fig. 6 shows two typical spectra of a 50 h run and in Table 3 It can be shown that the interference parameter fl is equal for each hyperfine component [28]. Broadening and splitting of the spectra could be explained by quadrupole interactions with exception of FeWO4, where also magnetic dipole interactions contribute.…”

“…We discuss here the so called cos-velocity-smearing, a finite size-effect, and the dependence on the absorber-thickness. The dependence on the angular distribution between incoming y-ray and outgoing electron [27] will be discussed in detail in a following paper [28]. As a consequence of the finite angle between the resonantly emitted y-ray and the direction of the relative velocity va of source and absorber, one observes in MB-spectra an increase in line-width and a change in line-shape and-position.…”