Microscopic theory of the γ-decay of nuclear giant resonances

Abstract

In the past decades, the γ-decay of giant resonances has been studied using phenomenological models. In keeping with possible future studies performed with exotic beams, microscopically-based frameworks should be envisaged. In the present paper, we introduce a model which is entirely based on Skyrme effective interactions, and treats the ground-state decay within the fully self-consistent Random Phase Approximation (RPA) and the decay to low-lying states at the lowest order beyond RPA. The model is applied to 208Pb and 90Zr, and the results are compared with experimental data.

arXiv comment11 pages, 7 figures, 5 tables, submitted to Physical Review C

References in corpus (2)

• From Brueckner Approach to Skyrme-type Energy Density Functional
• Escape and Spreading Properties of Charge-Exchange Resonances in Bi 208

Cited by in corpus (11)

• Time-dependent density-functional description of nuclear dynamics
• Nuclear Equation of State from ground and collective excited state properties of nuclei
• Giant Quadrupole Resonances in 208Pb, the nuclear symmetry energy and the neutron skin thickness
• Systematic of isovector and isoscalar giant quadrupole resonances in normal and superfluid spherical nuclei
• Properties of single-particle states in a fully self-consistent particle-vibration coupling approach
• Spreading widths of giant resonances in spherical nuclei: damped transient response
• Towards a self-consistent dynamical nuclear model
• Gross, intermediate and fine structure of nuclear giant resonances: Evidence for doorway states
• Nuclear excitations as coupled one and two random--phase--approximation modes
• Learning the structure of giant resonances from their $\gamma$-decay
• A microscopic model beyond mean-field: from giant resonances properties to the fit of new effective interactions