Fragment Intrinsic Spins and Fragments' Relative Orbital Angular Momentum in Nuclear Fission

Abstract

We present the first fully unrestricted microscopic calculations of the primary fission fragment intrinsic spins and of the fission fragments' relative orbital angular momentum for ${}^{236}$U${}^{\ast }$, ${}^{240}$Pu${}^{\ast }$, and ${}^{252}$Cf using the time-dependent density functional theory framework. Within this microscopic approach, free of restrictions and unchecked assumptions and which incorporates the relevant physical observables for describing fission, we evaluate the triple distribution of the fission fragment intrinsic spins and of their fission fragments' relative orbital angular momentum and show that their dynamics is dominated by their bending collective modes, in contradistinction to the predictions of the existing phenomenological models and some interpretations of experimental data.

arXiv comment6 pages, 4 figures, accepted version

References in corpus (16)

• Induced Fission of ${}^{240}$Pu within a Real-Time Microscopic Framework
• Review on the progress in nuclear fission
• Fission Dynamics of 240Pu from Saddle-to-Scission and Beyond
• Calculation of fission observables through event-by-event simulation
• Time-Dependent Density Functional Theory and the Real-Time Dynamics of Fermi Superfluids
• Fission Fragment Decay Simulations with the CGMF Code
• A Minimal Nuclear Energy Density Functional
• Nuclear Fission Dynamics: Past, Present, Needs, and Future
• Generation of fragment angular momentum in fission
• Fission fragments intrinsic spins and their correlations
• Angular Momentum of Fission Fragments from Microscopic Theory
• Study of angular momentum effects in fission
• Time-Dependent Density Functional Theory for Fermionic Superfluids: from Cold Atomic Gases, to Nuclei and Neutron Stars Crust
• Model nuclear energy density functionals derived from ab initio calculations
• Fission Fragment Excitation Energy Sharing Beyond Scission
• Restoring Broken Symmetries for Nuclei and Reaction Fragments

Cited by in corpus (1)

• Restoring Broken Symmetries for Nuclei and Reaction Fragments