Collisional Damping of Giant Monopole and Quadrupole Resonances

Details Collisional Damping of Giant Monopole and Quadrupole Resonances Collisional Damping of Giant Monopole and Quadrupole Resonances

2001-01-08

arxiv.org/abs/nucl-th/0101016v1

Eur.Phys.J. A10 (2001) 289-294

Physics

Nuclear Physics

Nuclear Theory

RevTex, 12 pages, 6 PS figures

Scientific paper

10.1007/s100500170114

Collisional damping widths of giant monopole and quadrupole excitations for $^{120}$Sn and $^{208}$Pb at zero and finite temperatures are calculated within Thomas-Fermi approximation by employing the microscopic in-medium cross-sections of Li and Machleidt and the phenomenological Skyrme and Gogny forces, and are compared with each other. The results for the collisional widths of giant monopole and quadrupole vibrations at zero temperature as a function of the mass number show that the collisional damping of giant monopole vibrations accounts for about 30-40% of the observed widths at zero temperature, while for giant quadrupole vibrations it accounts for only 20-30% of the observed widths of zero temperature.

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