Role of dynamic pairing correlations in fission dynamics

Abstract

We study the role of dynamic pairing correlations in fission dynamics by considering intrinsic Hartree-Fock-Bogoliubov wave functions that are obtained by minimizing the particle number projected energy. For the restricted variational space, the set of self-consistent wave functions with different values of proton and neutron number particle fluctuations are considered. The particle number projected energy is used to define potential energy surface for fission whereas collective inertias are computed within the traditional formulas for the intrinsic states. The results show that the effect of the restricted variation after particle number projection in the potential energy surface is small while collective inertias substantially decrease. On the other hand, we show that this quenching is strongly mitigated when Coulomb antipairing is considered. In the light of these beyond mean-field calculations, the validity of traditional fission calculations is discussed.

7 pages, 3 Figures

References in corpus (6)

• The sign of the overlap of HFB wave functions
• Pairing-induced speedup of nuclear spontaneous fission
• Dynamic versus static fission paths with realistic interactions
• Application of the gradient method to Hartree-Fock-Bogoliubov theory
• Microscopic study of induced fission dynamics of ${}^{226}$Th with covariant energy density functionals
• Coulombic effect and renormalization in nuclear pairing

Cited by in corpus (6)

• Skyrme-Hartree-Fock-Bogoliubov mass models on a 3D mesh. IIb. Fission properties of BSkG2
• Coupling of pairing and triaxial shape vibrations in collective states of $\gamma$-soft nuclei
• Mapped interacting boson model for nuclear structure studies
• Least action description of dynamic pairing correlations in the fission of Curium and Californium isotopes based on the Gogny energy density functional
• Microscopic self-consistent description of induced fission: dynamical pairing degree of freedom
• Microscopic pairing in fission dynamics