Role of dynamic pairing correlations in fission dynamics

R. Bernard, S. A. Giuliani, and L. M. Robledo
Phys. Rev. C 99, 064301 – Published 3 June 2019

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 the 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 and therefore the final outcome of the complete calculation is close to the plain mean field result without Coulomb antipairing. In the light of these beyond-mean-field calculations, the validity of traditional fission calculations is discussed.

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  • Received 14 March 2019

DOI:https://doi.org/10.1103/PhysRevC.99.064301

©2019 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

R. Bernard1,2, S. A. Giuliani3, and L. M. Robledo4,5,*

  • 1Centre de Mathématiques et de Leurs Applications, CNRS, ENS Paris-Saclay, Université Paris-Saclay, 94235 Cachan Cedex, France
  • 2CEA, DAM, Île-de-France, 91297 Arpajon, France
  • 3NSCL/FRIB Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
  • 4Center for Computational Simulation, Universidad Politécnica de Madrid, Campus de Montegancedo, Boadilla del Monte, 28660 Madrid, Spain
  • 5Departamento de Física Teórica, Universidad Autónoma de Madrid, 28049 Madrid, Spain

  • *lm.robledo.physics@gmail.com

See Also

Role of dynamic pairing correlations in fission dynamics. II. Fermium and nobelium isotopes

R. Rodríguez-Guzmán and L. M. Robledo
Phys. Rev. C 106, 024335 (2022)

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Vol. 99, Iss. 6 — June 2019

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