Quantum-mechanical description of angular motion of fission fragments at scission
Phys. Rev. C 111, 064621 – Published 30 June, 2025
DOI: https://doi.org/10.1103/ltv2-4141
Abstract
The quantum-mechanical description of the collective angular motion in a system of two touching fission fragments is proposed. The main features of excitation spectrum and the structure of the wave functions are investigated. As found, the angular motion approximately corresponds to independent vibrations of fragments around the pole-to-pole configuration. The model allows us to explain the experimentally observed lack of correlation between the angular momenta of two fission fragments. The correlation between angular momentum and fragment mass is primarily linked to the change of fragments deformation. The saw-tooth behavior of angular momentum distribution with respect to the fragment mass is explained.
