Effects of surface vibrations on quadrupole response of nuclei

Details Effects of surface vibrations on quadrupole response of nuclei Effects of surface vibrations on quadrupole response of nuclei

2002-10-24

arxiv.org/abs/nucl-th/0210072v2

Nucl.Phys. A717 (2003) 44-52

Physics

Nuclear Physics

Nuclear Theory

Appendix added, version to be published in Nucl. Phys. A

Scientific paper

10.1016/S0375-9474(03)00611-0

The effect of quadrupole-type surface vibrations on the quadrupole response function of heavy nuclei is studied by using a model based on the solution of the linearized Vlasov equation with moving-surface boundary conditions. By using a separable approximation for the residual interaction, an analytical expression is obtained for the moving-surface response function. Comparison of the fixed- and moving-surface strength functions shows that surface vibrations are essential in order to achieve a unified description of the two characteristic features of the quadrupole response: the giant resonance and the low-lying states. Calculations performed by setting the surface tension equal to zero shows that the low-lying strength is strongly affected by the surface tension.

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