期刊
PHYSICAL REVIEW C
卷 100, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.100.024321
关键词
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资金
- National Natural Science Foundation of China [11875134, 11675101, 11775081]
- Program of Shanghai Academic/Technology Research Leader [16XD1401600]
- Natural Science Foundation of Shanghai [17ZR1408900]
- Shanghai Key Laboratory of Particle Physics and Cosmology [18DZ2271500-2]
- MEXT KAKENHI [18H05404]
- Grants-in-Aid for Scientific Research [18H05404] Funding Source: KAKEN
In this paper we demonstrate that a simple nucleon-pair picture, previously investigated for semi-magic even-even nuclei, survives in both odd-mass semi-magic nuclei and a few neutron-rich open-shell nuclei. This is exemplified by low-lying states of the semi-magic nuclei Ca43-48 and three open-shell nuclei Cd-132, Ag-131, and Pd-130, calculated with effective interactions. Not only the generalized-seniority-zero, -one and -two states, but also states with larger seniority numbers are shown to be well represented by one-dimensional nucleon-pair wave functions. Very interestingly, such one-dimensional nucleon-pair wave functions are readily adopted to be those with the lowest expectation energies among all nucleon-pair basis states. This provides us with a simple approach to study yrast states of semi-magic nuclei as well as yrast states of open-shell nuclei with only a few valence nucleons.
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