https://doi.org/10.1140/epja/s10050-024-01437-w
Regular Article - Theoretical Physics
Entropies, level-density parameters and fission probabilities along the triaxially- and axially-symmetric fission paths in 296Lv
1
Joint Institute for Nuclear Research, 141980, Dubna, Russia
2
Institute of Physics, University of Zielona Góra, Szafrana 4a, 65516, Zielona, Góra, Poland
3
National Centre for Nuclear Research, Pasteura 7, 02-093, Warsaw, Poland
Received:
29
July
2024
Accepted:
9
October
2024
Published online:
30
October
2024
We investigate the variation of statistical properties of the fissile nucleus, especially entropy, and nuclear level density, along different fission paths. The calculations were focused on comparing axial and triaxial trajectories leading to fission of 296Lv. We observe that change of shell effects and their suppression rates with deformation can substantially influence fission dynamics. Furthermore, the fission process exhibits iso-entropic behavior at high excitation energies, while pronounced entropy variations are observed at lower energies. We derive a deformation-dependent level density parameter that plays a critical role in estimating the survival probability of a superheavy nucleus. The competition between different fission paths was further studied by employing a master equation approach, thereby demonstrating the critical role of entropy and thermodynamic properties in shaping fission dynamics within multidimensional deformation spaces.
© The Author(s) 2024
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