Programme

P.53 -- Poster, VCTP-44

Date: Thursday, 1 August 2019

Time: 08:30 - 10:00

Role of pairing in maintaining the constant value of nuclear temperature at low excitation energy

Le Thi Quynh Huong1, Nguyen Dinh Dang2, Nguyen Quang Hung3, and Le Tan Phuc3;4

1 Department of Natural Science and Technology , University of Khanh Hoa, Nha Trang City, Khanh Hoa Province, Vietnam; 2 Quantum Hadron Physics Laboratory, RIKEN Nishina Center for Accelerator-Based Science, 2-1 Hirosawa, Wako City, 351-0198 Saitama, Japan; 3 Institute of Fundamental and Applied Sciences, Duy Tan University, 3 Quang Trung, Danang city, Vietnam; 4 Faculty of Physics and Engineering Physics, Vietnam National University Ho Chi Minh City – University of Science, Ho Chi Minh City, Viet Nam

The nuclear temperature is calculated by using nuclear level density extracted from microscopic EP + IPM approach, which includes exact pairing (EP) for the levels around the Fermi surface in combination with the independent particle (IPM) model for the rest of the single-particle spectrum [1]. It is found that the temperature is almost constant at low excitation energy. This feature explains why the constant-temperature model can describe well the nuclear level density. The validity of this phenomenological model will be clearly analyzed in some nuclei. The results also show that pairing plays an important role in maintaining this nearly constant value of temperature at low excitation energy. [1] Quang Hung N, Dinh Dang N and Quynh Huong L T (2017) Phys. Rev. Lett. 118 022502

Presenter: Le Thi Quynh Huong