The quasiparticle-phonon nuclear model extended to finite temperature within the framework of thermofield dynamics is applied to calculate a temperature dependence of the spreading width of a giant dipole resonance. Numerical calculations are made for 120Sn and 208Pb nuclei. It is found that spreading width increases with T. The reason for this effect is discussed as well as a relation of the present approach to other ones existing in the literature.

Temperature Dependence of Spreading Width of Giant Dipole Resonance

Ventura, A.
2004-06-01

Abstract

The quasiparticle-phonon nuclear model extended to finite temperature within the framework of thermofield dynamics is applied to calculate a temperature dependence of the spreading width of a giant dipole resonance. Numerical calculations are made for 120Sn and 208Pb nuclei. It is found that spreading width increases with T. The reason for this effect is discussed as well as a relation of the present approach to other ones existing in the literature.
Applicazioni di fisica e tecnologie nucleari
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.12079/162
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
social impact