The damping width of giant dipole resonances of cold and hot nuclei: a macroscopic model

Details The damping width of giant dipole resonances of cold and hot nuclei: a macroscopic model The damping width of giant dipole resonances of cold and hot nuclei: a macroscopic model

2001-09-12

arxiv.org/abs/nucl-th/0109034v1

Phys.Rev. C65 (2002) 044620

Physics

Nuclear Physics

Nuclear Theory

10 pages, 5 figures

Scientific paper

10.1103/PhysRevC.65.044620

A phenomenological macroscopic model of the Giant Dipole Resonance (GDR) damping width of cold- and hot-nuclei with ground-state spherical and near-spherical shapes is developed. The model is based on a generalized Fermi Liquid model which takes into account the nuclear surface dynamics. The temperature dependence of the GDR damping width is accounted for in terms of surface- and volume-components. Parameter-free expressions for the damping width and the effective deformation are obtained. The model is validated with GDR measurements of the following nuclides, $^{39,40}$K, $^{42}$Ca, $^{45}$Sc, $^{59,63}$Cu, $^{109-120}$Sn,$^{147}$Eu, $^{194}$Hg, and $^{208}$Pb, and is compared with the predictions of other models.

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