期刊
PHYSICAL REVIEW C
卷 84, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.84.021302
关键词
-
资金
- PACS-CS of the Center for Computational Sciences [09-a-25, 09-b-9, 10a-22]
- University of Tsukuba
- High Energy Accelerator Research Organization (KEK) [08-14, 09-16, 09/10-10]
- [20105003]
- [21340073]
- Grants-in-Aid for Scientific Research [21340073, 20105003] Funding Source: KAKEN
The pygmy dipole resonances (PDR) for even-even nuclei in 8 <= Z <= 40 are studied performing a systematic calculation of the random-phase approximation with the Skyrme functional of SkM*. The calculation is fully self-consistent and does not assume any symmetry in the nuclear shape of the ground state. In every isotopic chain, the PDR emerges by showing a peak of the E1 strength at energies less than 10 MeV. The E1 strength of the PDR strongly depends on the position of the Fermi level and shows a clear correlation with the occupation of the orbits with the orbital angular momenta less than 3 (h) over bar (l <= 2). We also found a strong correlation between the isotopic dependence of the neutron skin thickness and the pygmy dipole strength. The fraction of the energy-weighted strength exhausted by the PDR and the neutron skin thickness show a linear correlation with the universal rate of about 0.2 fm(-1).
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据