https://doi.org/10.1140/epja/s10050-023-01135-z
Regular Article - Experimental Physics
Probing binary fragmentation dynamics of 
Ti + 
Th reaction at an excitation energy of 63.5 MeV
1
Department of Physics, Panjab University, 160014, Chandigarh, India
2
Inter University Accelerator Centre, Aruna Asaf Ali Marg, 110067, New Delhi, India
3
Bogoliubov Laboratory of Theoretical Physics, JINR, Dubna, Russia
4
Institute of Nuclear Physics, Uzbekistan Academy of Sciences, 100214, Tashkent, Uzbekistan
5
Department of Physics and Astrophysics, University of Delhi, 110007, Delhi, India
6
Department of Physics, Kurukshetra University, 136119, Kurukshetra, India
7
GSI Helmholtzzentrum für Schwerionenforschung, 64291, Darmstadt, Germany
Received:
25
March
2023
Accepted:
26
September
2023
Published online:
20
October
2023
The present work concerns the study of fission dynamics of Ti+Th reaction resulting in the superheavy composite system 
Cn
at an incident energy of 280 MeV. Mass distribution studies play an important role in understanding the fusion-fission mechanism involved in the heavy-ion induced nuclear reaction. The studies related to the superheavy nucleus Cn are limited till date and in order to achieve a better insight of the reaction dynamics, mass and total kinetic energy (TKE) distribution of the binary fragments populated in the reaction Ti+Th has been measured at an excitation energy 63.5 MeV. Correlation between the mass and TKE and mass-angle distribution of the binary fragments have been investigated. The mass-energy distribution of the reaction fragments obtained from the analysis confirms the dominance of quasi-fission over fusion-fission. A sudden rise in the width of 
(M) has been observed in the mass symmetric region. This has been interpreted in terms of the mixing of fusion-fission and quasi-fission events. A deviation from the Viola systematic is observed in the measured TKE of the fragments due to the presence of quasi-fission (QF) process. Theoretical results performed to understand the experimental results in the framework of the DNS model show that the peaks in the mass distribution of the binary products around the mass numbers A = 40–60 and A = 220–240 is related with the contribution of the DIC and quasi-fission products. The contribution of the quasi-fission products to the yield of the binary fragments with the mass numbers around A = 80–110 and A = 170–200 is dominant. The contribution of the symmetric quasi-fission products to the yield of the mass symmetric region is comparable with the yield of the fusion-fission products.
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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.
