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Competition between isoscalar and isovector pairing correlations in N=Z nuclei | | Kazunari Kaneko
; Munetake Hasegawa
; | | Date: |
2 Apr 2004 | | Journal: | Phys.Rev. C69 (2004) 061302 | | Subject: | nucl-th | | 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. | | Source: | arXiv, nucl-th/0404003 | | Services: | Forum | Review | PDF | Favorites | |
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