Programme

P.55 -- Poster, VCTP-48

Date: Thursday, 3 August 2023

Time: 08:30 - 10:00

The enhancement of Pauli blocking effect in odd-nuclei pairing

T. Vu Dong (1), L. Tan Phuc (2), N. Quang Hung(2), N. Dinh Dang (3), T. Dieu Huyen (4), N.L. Anh Tuan (4)

(1) University of Science, VNU-HCM (2) Duy Tan University (3) RIKEN Nishina Center for Accelerator-Based Science (4) Ho Chi Minh City University of Education

Pairing reentrance in excited (hot) odd nuclei at low temperature (T<0.5-1 MeV) is caused by the weakening of Pauli blocking on the level occupied by the odd nucleon. At zero temperature, the single-particle occupation number of the last level occupied is 0.5 and it means this level is completely blocked. However, the proximity of neighboring levels to the odd level results in sharing the blocking property at a very low temperature, extending the blocking effect to the neighboring levels. Consequently, the levels surrounding the odd level can also be blocked, preventing pair-scattering processes. The diminishment or elimination of pairing reentrance occurs when Pauli blocking strongly influences the levels near the Fermi surface at low temperature.

Presenter: Tran Vu Dong