Open AccessPhase transition between the isovector to isoscalar pairing correlations in deformed N = Z nuclei
Author(s) -
Eunja Ha,
Myung-Ki Cheoun,
H. Sagawa
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1643/1/012121
Subject(s) - pairing , isoscalar , isovector , physics , atomic physics , deuterium , spin (aerodynamics) , nuclear physics , nucleon , condensed matter physics , superconductivity , thermodynamics
We investigate the pairing correlations on N = Z nuclei. In particular, the isoscalar (IS) pairing mode in neutron-proton ( np ) pairing is discussed in detail because the IS np pairing is closely related to the tensor force in the nucleon-nucleon interaction. Recent experiments demonstrated that the IS pairing might be enhanced from the M1 spin strength distribution data and deuteron, which is a consequence of the IS pairing, can be detected in 16 O( p,p’d ) 14 N reaction. The present study illustrates that the IS np pairing can be condensed not only in S=0, L = odd states but also in S=1, L=even states. The former is usually treated as T=0 np pairing. The latter is associated with deuteron and has not been fully treated in the BCS theory for the nuclear structure. In particular, the latter np pairing can be ejected as deuteron from the energetic probes in the experiments. Detailed analyses of the np pairing are performed mainly on 16 O and extended to other N = Z nuclei.