Excited-State Density Distributions of Neutron-Rich Unstable Nuclei

Details Excited-State Density Distributions of Neutron-Rich Unstable Nuclei Excited-State Density Distributions of Neutron-Rich Unstable Nuclei

2006-08-02

arxiv.org/abs/nucl-th/0608007v1

Phys.Rev.C76:044320,2007

Physics

Nuclear Physics

Nuclear Theory

4 pages, 4 figures

Scientific paper

10.1103/PhysRevC.76.044320

We calculate densities of excited states in the quasiparticle random-phase approximation (QRPA)with Skyrme interactions and volume pairing. We focus on low-energy peaks/bumps in the strength functions of a range of Ca, Ni, and Sn isotopes for J pi = 0+, 1-, and 2+. We define an "emitted-neutron number", which we then use to distinguish localized states from scattering-like states. The degree of delocalization either increases as the neutron-drip line is approached or stays high between the stability line and the drip line. In the 2+ channel of Sn, however, the low-lying states, not even counting surface vibrations, are still fairly well localized on average, even at the neutron drip line.

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