Competition of deformation and neutron– proton pairing in Gamow–Teller transitions for 56,58Ni and 62,64Ni
- Authors
- Ha, Eunja; Cheoun, Myung-Ki
- Issue Date
- Sep-2019
- Publisher
- IOP PUBLISHING LTD
- Keywords
- Gamow-Teller transition; deformed QRPA; Ni isotopes
- Citation
- JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, v.46, no.10, pp.1 - 20
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
- Volume
- 46
- Number
- 10
- Start Page
- 1
- End Page
- 20
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/189810
- DOI
- 10.1088/1361-6471/ab3591
- ISSN
- 0954-3899
- Abstract
- We investigate effects of unlike-pairing correlations by neutron-proton (np) pairs on Gamow-Teller strength distributions for even-even Ni isotopes, 56,58,60,62,64Ni, by taking into account nuclear deformation in a deformed Woods-Saxon mean field. Our calculations based on a deformed Bardeen- Cooper-Schriffer approach which preserves the axial and the time-reversal symmetry are performed within a deformed quasiparticle random phase approximation, in which we explicitly include the deformation and the unlike-pairing as well as the like-pairing correlations by neutron-neutron and proton- proton pairs. Competition of these two effects, the deformation and the pairing correlations, is shown to be able to affect more or less the GT strength distributions of the even-even Ni isotopes.
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