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Pairing in hot rotating nuclei

Authors
  • Hung, N. Quang
  • Dang, N. Dinh
Type
Published Article
Publication Date
Nov 26, 2008
Submission Date
Nov 26, 2008
Identifiers
DOI: 10.1103/PhysRevC.78.064315
Source
arXiv
License
Unknown
External links

Abstract

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 non-collective 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.

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