Pairing in hot rotating nuclei
- Heavy-Ion Nuclear Physics Laboratory, RIKEN Nishina Center for Accelerator-Based Science 2-1 Hirosawa, Wako City, 351-0198 Saitama (Japan)
Nuclear pairing properties are studied within an approach that includes the quasiparticle-number fluctuation (QNF) and coupling to the quasiparticle-pair vibrations at finite temperature and angular momentum. The formalism is developed to describe noncollective rotations about the symmetry axis. The numerical calculations are performed within a doubly folded equidistant multilevel model as well as several realistic nuclei. The results obtained for the pairing gap, total energy, and heat capacity show that the QNF smoothes out the sharp SN phase transition and leads to the appearance of a thermally assisted pairing gap in rotating nuclei at finite temperature. The corrections due to the dynamic coupling to SCQRPA vibrations and particle-number projection are analyzed. The effect of backbending of the momentum of inertia as a function of squared angular velocity is also discussed.
- OSTI ID:
- 21199426
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 78, Issue 6; Other Information: DOI: 10.1103/PhysRevC.78.064315; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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