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.File in questo prodotto:
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