Evolution of the Neutron Single-Particle Structure of Neutron-Rich Isotones with N=28 in the Dispersive Optical Model

被引：1
|
作者：
Bespalova, O. V. [1 ]
机构：
[1] Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow 119991, Russia
来源：
MOSCOW UNIVERSITY PHYSICS BULLETIN | 2018年 / 73卷 / 06期
关键词：
dispersive optical model; single-particle characteristics of nuclei; neutron drip line; NUCLEI;
D O I：
10.3103/S0027134918060048
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The evolution of the single-particle characteristics of isotones with N = 28 upon approaching the neutron drip line has been calculated using a dispersive optical model. According to the calculation, the particle-hole gap N = 28 sharply decreases with an excess of neutrons so that the 1f(7/2), 2p(3/2) and 2p(1/2) states are almost degenerate at the neutron drip line with an occupation probability close to 0.5. Due to the Jahn-Teller effect, the degeneracy of these states is one of the causes of deformation of neutron-rich isotones with N = 28.
引用
收藏
页码：605 / 611
页数：7
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