Rotational damping motion in nuclei

The recently proposed model to explain the mechanism of the rotational motion damping in nuclei is exactly solved. When compared with the earlier approximative solution, we find significative differences in the low excitation energy limit (i.e.). For the strength functions we find distributions going from the Wigner semicircle through gaussians to Breit-Wigner shapes.Dedicated to Prof. Dr. H.J. Mang on the occasion of his 60th birthday. Work supported in part by the DFG and Cicyt, project PB88-0177