https://doi.org/10.1140/epjp/s13360-023-04325-2
Regular Article
Systematic study of the widths of fission fragment mass distributions of neutron deficient compound nuclei in the medium mass region
Department of Physics, Kurukshetra University, 136119, Kurukshetra, Haryana, India
Received:
14
December
2022
Accepted:
27
July
2023
Published online:
8
August
2023
We have performed a systematic study of the widths of measured fission fragment mass distributions (FFMDs) from the fission of compound nuclei (CN) in the pre-actinide region in the overlapping excitation energy domain. The study has been performed for different reaction variables, such as the relative value of entrance channel mass asymmetry (
) w. r. t. Businaro–Gallone mass asymmetry (
) or projectile-target charge product 
, N/Z ratio and excitation energy of the fissioning nuclei. In many cases, anomalous behaviour of the mass width with excitation energy of the fissioning nuclei indicates signatures of a non-equilibrated fission process or mass asymmetric fission. The present study shows the systematic dependence of reaction mechanism in such reactions on entrance channel parameters, i.e., entrance channel mass asymmetry, N/Z ratio and excitation energy of fissioning nuclei. The observed general behaviour of reactions studied w. r. t. different entrance channel parameters chosen for the present study shows the characteristic behaviour of CN fission but with certain exceptions, where mass widths show anomalies in the studied energy domain.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
