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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. | URI: | https://hdl.handle.net/10316/40855 | ISSN: | ISSN 0449-1947 | DOI: | 10.1051/jphyscol:1987207 | Rights: | openAccess |
Appears in Collections: | FCTUC Física - Artigos em Revistas Internacionais |
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