Abstract
We apply smoothing procedures to response functions for isoscalar vibrations. For collective motion, we find a transition from a structured strength distribution to one corresponding to one incoherent, strongly overdamped mode. It is argued that the latter may be interpreted as “macroscopic” motion exhibiting, to some extent, features of the hydrodynamical model. We discuss the physical origin of this behaviour, in particular its relation to the disappearance of shell structure.
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Supported in part by the Deutsche Forschungsgemeinschaft
The authors would like to thank both V.M. Strutinsky as well as A.G. Magner for many helpful suggestions and comments. They gratefully acknowledge help by D. Kiderlen in preparation of the figures. One of us (F.A.I.) would like to thank the Deutsche Forschungsgemeinschaft for financial support and the Physics Department of the TUM for the kind hospitality.