Titlebook: Atomic and Nuclear Clusters; Proceedings of the S G. S. Anagnostatos,W. Oertzen Conference proceedings 1995 Springer-Verlag Berlin Heidelbe

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Optical response and shapes of charged sodium clusters; an analogue of the nuclear giant dipole respdue to differences in the two media; the nucleus is a quantum liquid whereas the metallic medium is more like a plasma with classical positive ions and quantized electrons. The similarities and differences are illustrated by results from optical response measurements for charged sodium clusters with 14 to 48 atoms.