Collective excitations in neutron-rich nuclei within the model of a Fermi liquid drop

被引：5

作者：

Kolomietz, VM ^{[1
]}

Magner, AG ^{[1
]}

机构：

[1] Natl Acad Sci Ukraine, Inst Nucl Res, UA-252028 Kiev, Ukraine

来源：

PHYSICS OF ATOMIC NUCLEI | 2000年 / 63卷 / 10期

关键词：

D O I：

10.1134/1.1320142

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We discuss a new mechanism of splitting of giant multipole resonances (GMR) in spherical neutron-rich nuclei. This mechanism is associated with the. basic properties of an asymmetric drop of nuclear Fermi liquid. In addition to well-known isospin shell-model predictions, our approach can be used to describe the GMR splitting phenomenon in the wide nuclear-mass region A similar to 40-240. For the dipole isovector modes, the splitting energy, the relative strength of resonance peaks, and the contribution to the energy-weighted sum rules are in agreement with experimental data for the integrated cross sections for photonuclear (gamma, n) and (gamma, p) reactions. (C) 2000 MAIK "Nauka/Interperiodica".

引用

页码：1732 / 1739

页数：8

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