Systematic study of the thermal pairing re-entrance in the 72Ti nucleus

Year 2019, NSP2018 Special Issue, 142 - 148, 28.03.2019

Belabbas Mohamed , Jérôme Margueron

Abstract

Finite-temperature
Hartree-Fock-Bogoliubov calculations are performed in ⁷²Ti using
Skyrme interactions, to predict the finite-temperature pairing re-entrance
phenomenon for the system of neutrons. It is also shown that pairing re-entrance
modifies the neutron single-particle energies around the Fermi level, as well
as occupation numbers and quasiparticle levels. It is also shown that neutron
resonant states are expected to contribute substantially to pairing
correlations and the two predicted critical temperatures are T_c1=0.1-0.2
MeVand T_c2=0.7-0.9 MeV. On the
other hand, Our results for the ground-state energies, proton and neutron
separation energies are in very good agreement with experiment where available.

Keywords

Nuclear density functional theory, pairing correlation, nuclear forces nuclear density functional theory

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