Investigation on Competing Fission Modes in 178Pt* Produced by 36Ar + 142Nd Reaction up to High Excitation Energies
Kumar D. Kozulin E.M. Knyazheva G.N. Maiti M. Itkis I.M. Bogachev A.A. Novikov K.V. Cheralu M. Banerjee T. Diatlov I.N. Kozulina N.I. Pchelintsev I.V. Vorobiev I.V. Pan A.N. Prajapat R. Kumar R. Vardaci E. Trzaska W.H. Andreyev A. Harca I.M.
December 2021Pleiades journals
Bulletin of the Russian Academy of Sciences: Physics
2021#85Issue 121479 - 1485 pp.
Abstract: The mass–energy distributions of binary fission fragments (FFs) of excited exotic nucleus 178Pt* were measured via the fusion reaction 36Ar + 142Nd at different beam energies within 158–222 MeV range using the double arm time-of-flight spectrometer CORSET. The analysis of mass–energy matrices reveals the presence of both asymmetric and symmetric modes corresponding to respective lower and higher total kinetic energy (TKE) of the fragments within 42–64 MeV excitation energy. The agreement of measured mass width with theoretical systematics and dominance of the associated symmetric TKE component at 93 MeV excitation energy indicates the significant predominance/suppression of symmetric/asymmetric mode, respectively. The most probable light and heavy mass peaks of asymmetric fission mode of 178Pt are spotted at 79 and 99 u, respectively. As inferred from the theory, the mass–TKE events observed at the highest measured excitation energy (93 MeV) endorse the presence of the fast-fission process in 178Pt* at high angular momentum.
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Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, Moscow oblast, Dubna, 141980, Russian Federation
GSI Helmholtzzentrum für Schwerionenforschung, Darmstadtt, 64291, Germany
Department of Physics, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Institute of Nuclear Physics, Almaty, 050032, Kazakhstan
Dipartimento di Fisica, Università di Napoli and INFN, Napoli, 80126, Italy
Department of Physics, University of Jyväskylä, Jyväskylä, FI-40014, Finland
Department of Physics, University of York, York, YO10 5DD, United Kingdom
Horia Hulubei National Institute for Physics and Nuclear Engineering, Magurele, Bucharest, 077125, Romania
Flerov Laboratory of Nuclear Reactions
GSI Helmholtzzentrum für Schwerionenforschung
Department of Physics
Institute of Nuclear Physics
Dipartimento di Fisica
Department of Physics
Department of Physics
Horia Hulubei National Institute for Physics and Nuclear Engineering
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