dorsal/arxiv
View SchemaCompetition between isoscalar and isovector pairing correlations in N=Z nuclei
| Authors | Kazunari Kaneko, Munetake Hasegawa |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0404003 |
| URL | https://arxiv.org/abs/nucl-th/0404003 |
| DOI | 10.1103/PhysRevC.69.061302 |
| Journal | Phys.Rev. C69 (2004) 061302 |
Abstract
We study the isoscalar (T=0) and isovector (T=1) pairing correlations in N=Z nuclei. They are estimated from the double difference of binding energies for odd-odd N=Z nuclei and the odd-even mass difference for the neighboring odd-mass nuclei, respectively. The empirical and BCS calculations based on a T=0 and T=1 pairing model reproduce well the almost degeneracy of the lowest T=0 and T=1 states over a wide range of even-even and odd-odd N=Z nuclei. It is shown that this degeneracy is attributed to competition between the isoscalar and isovector pairing correlations in N=Z nuclei. The calculations give an interesting prediction that the odd-odd N=Z nucleus 82Nb has possibly the ground state with T=0.
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"abstract": "We study the isoscalar (T=0) and isovector (T=1) pairing correlations in N=Z\nnuclei. They are estimated from the double difference of binding energies for\nodd-odd N=Z nuclei and the odd-even mass difference for the neighboring\nodd-mass nuclei, respectively. The empirical and BCS calculations based on a\nT=0 and T=1 pairing model reproduce well the almost degeneracy of the lowest\nT=0 and T=1 states over a wide range of even-even and odd-odd N=Z nuclei. It is\nshown that this degeneracy is attributed to competition between the isoscalar\nand isovector pairing correlations in N=Z nuclei. The calculations give an\ninteresting prediction that the odd-odd N=Z nucleus 82Nb has possibly the\nground state with T=0.",
"arxiv_id": "nucl-th/0404003",
"authors": [
"Kazunari Kaneko",
"Munetake Hasegawa"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.69.061302",
"journal_ref": "Phys.Rev. C69 (2004) 061302",
"title": "Competition between isoscalar and isovector pairing correlations in N=Z nuclei",
"url": "https://arxiv.org/abs/nucl-th/0404003"
},
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