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Title: Fragmentation of high multipolar vibrational strength in a semiclassical approach
Authors: Fiolhais, Carlos 
Brito, L. de 
Issue Date: 1987
Publisher: Société Française de Physique
Citation: FIOLHAIS, Carlos ; BRITO, L. – Fragmentation of high multipolar vibrational strength in a semiclassical approach. Journal de Physique Colloques. Les Ulis : Société Française de Physique. ISSN 0449-1947. Vol. 48 (C 2) (1987), p. C2-51-C2-54.
Serial title, monograph or event: Journal de Physique Colloques
Volume: 48
Issue: C 2
Place of publication or event: Les Ulis
Abstract: A recent variational approach to the Vlasov equation has shown its ability to describe some splitting of the strength corresponding to nuclear giant resonances, as a consequence of the allowance for rotation Bow. This fragmentation of strength should be understood as a manifestation in a finite system of the phenomenon of Landau damping , which is well-known, for instance, in the electron gas. In this work we extend previous studies, in order to discuss the fragmentation of strength with higher multipolarity. We observe a progressive increase of the fragmentation, so that there are no well-defined collective modes for t > 6 . This conclusion is in anreement with RPA studies, although the loss of coherence for high multipolar modes is not so pronounced in the semiclassical approach as in the quantal case.
ISSN: ISSN 0449-1947
DOI: 10.1051/jphyscol:1987207
Rights: openAccess
Appears in Collections:FCTUC Física - Artigos em Revistas Internacionais

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