Programme

O.12 -- Oral, NCTP-43

Date: Tuesday, 31 July 2018

Time: 11:00 - 11:20

Blocking effect of odd nucleon in odd nuclei at finite temperature

Le Thi Quynh Huong (1,2), Nguyen Quang Hung (3), and Nguyen Dinh Dang (4,5)

(1) Department of Natural Science and Technology, University of Khanh Hoa, Nha Trang City, Khanh Hoa Province, Vietnam; (2) Faculty of Physics and Engineering Physics, Ho Chi Minh city-University of Science, Ho Chi Minh City, Vietnam; (3) Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh city, Vietnam; (4) Quantum Hadron Physics Laboratory, RIKEN Nishina Center for Accelerator-Based Science, 2-1 Hirosawa, Wako City, 351-0198 Saitama, Japan; (5) Institute for Nuclear Science and Technique, Hanoi, Vietnam;

The present talk introduces our recent microscopic approaches, which were proposed to improve the treatment of blocking effect on the pairing properties of nuclear systems having odd number of nucleon (neutron or proton) at finite temperature [1]. The approaches are proposed based on the finite-temperature Bardeen-Cooper-Schrieffer (FTBCS) theory and the FTBCS theory incorporating the thermal fluctuations caused by the finiteness of the nuclear system. Based on the analysis of the exact solutions of the pairing problem, we found that the occupation number of the odd particle, which occupies the top level closet to the Fermi surface, should indeed decrease with increasing temperature. This finding completely invalidates the conventional assumption of the unity occupation number for the blocked level occupied by the odd particle. References [1] N. Quang Hung, N. Dinh Dang, and L. T. Quynh Huong, Phys. Rev. C 94, 024341 (2016).

Presenter: Le Thi Quynh Huong