Microscopic description of spontaneous fission based on a Gogny energy density functional including tensor contributions

2024/09/03 by R. Rodrı́guez-Guzmán, R Rodríguez-Guzmán, L. M. Robledo +3
Physics and Astronomy · #Advanced Chemical Physics Studies #Atomic and Molecular Physics #Nuclear physics research studies

paper · doi:10.1088/1361-6471/ad76c4

openalex publication_date 2024/09/03 · openalex created_date 2024/09/04 · openalex updated_date 2026/07/28

Abstract

Abstract This paper extends previous studies on the impact of tensor forces in fission dynamics of neutron-deficient Thorium isotopes to other isotopic chains of heavy actinides and low-mass super-heavy nuclei. Calculations are carried out within a mean-field framework based on the Gogny-D1S parametrization supplemented with the D1ST2a perturbative tensor term as driving force. Fission barrier heights and spontaneous fission half-lives are used as benchmarks to analyze the impact of the tensor term. A significant reduction of fission barrier heights and half-lives is associated with the tensor component of the force.

Citations

• Microscopic analysis of collective dynamics in low energy fission
• Mean Field with Tensor Force and Shell Structure of Exotic Nuclei
• Tensor and tensor-isospin terms in the effective Gogny interaction
• Pairing effects in nuclear collective motion: Generator coordinate method
• The fission barriers in Actinides and superheavy nuclei in covariant density functional theory

Related

• Impact of perturbative tensor interactions on the spontaneous fission half-lives of superheavy nuclei
• Role of the tensor force in induced fission of 240Pu
• Mean Field with Tensor Force and Shell Structure of Exotic Nuclei
• Interplay between tensor force and deformation in even-even nuclei
• Multidimensionally-constrained relativistic Hartree-Bogoliubov study of nuclear spontaneous fission