Isoscalar Pair Condensation in the ground states of N= Z nuclei
Seminars
Seminar “Low-energy nuclear physics”
Date and Time: Friday, 26 July 2019, at 2:30 PM
Venue: Conference Hall (4th floor), Bogoliubov Laboratory of Theoretical Physics
Seminar topic: «Isoscalar Pair Condensation in the ground states of N= Z nuclei»
Speaker: Eunja Ha (Soongsil University, OMEG Institute, Seoul, Korea)
Abstract:
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 (N-N) interaction. Moreover, 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 16O (p; p’d)14N 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 16O and extended to other N = Z nuclei.