Work

Shell effects in quasi-fission: Reactions forming actinide and superheavy compound nuclei

Year: 2025

Type: article

Abstract: Quasi-fission occurs in fully damped heavy-ion collisions following a significant mass transfer between the fragments, without formation of a compound nucleus. As in fission, quasi-fission is expected to be affected by quantum effects leading to asymmetric mass splits. Quantum shells stabilising fission fragments with octupole shapes have been invoked as a factor determining the distribution of nucleons between the fragments at scission, explaining the fact that the centroid of the heavy fragment charge distribution is found around Z = 54 protons in fission and quasi-fission of actinides. These shell effects are studied in microscopic studies of quasi-fission. In particular, time-dependent Hartree-Fock (TDHF) calculations have been performed for reactions forming actinides.

Source: Nuclear Physics A

DOI: 10.1016/j.nuclphysa.2025.123170

Authors: C. Simenel, K. Godbey, H. Lee, P. McGlynn, A.S. Umar

Institutions: Australian National University, Facility for Rare Isotope Beams, Michigan State University, Vanderbilt University

Language: English

Topic: Nuclear physics research studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $2,590