Kern- und festkörperphysikalische Untersuchungen mit Hilfe des Mössbauereffekts in157Gd

With the narrow line of the 64 keV γ-ray in¹⁵⁷Gd the isomer shift, the magnetic field, and the electric field gradient in Gd metal have been determined precisely. The ratio of theg-factors of the excited state and the ground state has been measured from which the magnetic moment of the excited state was deduced. Comparisons to theoretical and other experimental results are performed. From the isomer shift a value of δ 〈r ²〉 can be inferred.