Investigation of mass-energy distributions of fragments formed in the 32S+232Th→264Sg reaction at energies bellow and near the Coulomb barrier

Oct 15, 2020, 3:20 PM
25m
Online

Online

Oral report Section 2. Experimental and theoretical studies of nuclear reactions. Section 2. Experimental and theoretical studies of nuclear reactions

Speaker

Ms Evgeniya Galkina (JINR,FLNR)

Description

${E.Galkina^\textit{1}}$, ${E. M. Kozulin^\textit{1}}$,${G. N. Knyazheva^\textit{1}}$ , ${I. M. Itkis^\textit{1}}$, ${A. A. Bogachev^\textit{1}}$, ${I. N. Diatlov^\textit{1}}$, ${M. Cheralu^\textit{1}}$, ${D. Kumar^\textit{1}}$, ${N. I. Kozulina^\textit{1}}$,${ K. V. Novikov^\textit{1}}$, ${A. N. Pan^\textit{1,2}}$,${ I. V. Pchelintsev^\textit{1}}$, ${I. V. Vorobiev^\textit{1}}$,${ W. H. Trzaska^\textit{3}}$, ${S. Heinz^\textit{4}}$, ${ B. Lommel^\textit{4}}$, ${ E. Vardaci^\textit{5,6}}$, ${S. Spinosa^\textit{5,6}}$, ${A. Di Nitto^\textit{5,6}}$, ${ A. Pulcini^\textit{5,6}}$, ${ S. V. Khlebnikov^\textit{7}}$, ${C. Borcea^\textit{8}}$, ${I. Harca^\textit{8}}$, ${ D. M. Filipescu^\textit{8}}$
${^\textit{1}}$Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, 141980 Dubna, Russia
${^\textit{2}}$Laboratory of Fission Physics, Institute of Nuclear Physics, Almaty, 480082 Kazakhstan
${^\textit{3}}$Department of Physics, University of Jyväskylä, FIN-40014 Jyväskylä, Finland
${^\textit{4}}$GSI Helmholtzzentrum f ̈ur Schwerionenforschung, 64291 Darmstadt, Germany
${^\textit{5}}$Dipartimento di Fisica “E. Pancini”, Universita de li t di di Napoli “Federico II”, 80126 Napoli, Italy
${^\textit{6}}$Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, 80126 Napoli, Italy
${^\textit{7}}$Khlopin Radium Institute, St.Petersburg, Russia
${^\textit{8}}$Horia Hulubei National Institute for Physics and Nuclear Engineering, 077125 Bucharest- Măgurele, Romania

The present work is focused on exploring the features of fission of ${^\text{264}}$Sg formed in the reaction ${^\text{32}}$S+${^\text{232}}$Th at energies near and below the Coulomb barrier. The detailed study of properties of Sg fission will enrich the information on fission in the transition region of transactinide nuclei. The experiment was carried out at the K-130 accelerator of the University of Jyväskylä (Finland) at energies of ${^\text{32}}$S ions of 165, 181 и 200 MeV. The mass-energy distributions of the reaction fragments were measured using the double-arm time-of-flight spectrometer CORSET. As a result of the analysis of experimental data, the dependence of width of mass-energy distributions on the excitation energy was obtained. In the symmetric mass region (А/2±20), the contribution of the quasifission process was found at energies both below and above the Coulomb barrier.

This work was supported by a joint grant from the Indian Department of Science and Technology and the Russian Foundation for Basic Research (project No. 19-52-45023).

Primary author

Ms Evgeniya Galkina (JINR,FLNR)

Co-authors

Prof. Eduard Kozulin (FLNR) Dr Iulia Mikhailovna Itkis (Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, Dubna, 141980 Russia) Dr Galina Nikolaevna Knyazheva (Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, Dubna, 141980 Russia) Alexey Bogachev (JINR) Mr Ivan Nikolaevich Diatlov (Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, Dubna, 141980 Russia) Meghashree Cheralu House (Master's in Physics) Dr Deepak Kumar (FLNR , JINR) Mrs Nina Ivanovna Kozulina (Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, Dubna, 141980 Russia) Mr Kirill Vladimirovich Novikov (Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, Dubna, 141980 Russia) Mr Andrey Pan (Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, Dubna, 141980 Russia) Mr Ivan Valeryevitch Pchelintsev (Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, Dubna, 141980 Russia) Wladyslaw Henryk Trzaska (University of Jyvaskyla (FI)) Mr Igor Vorobiev (FLNR,JINR) Dr Emanuele Vardaci (INFN-Na) Antonio Di Nitto (University of Naples) Dr Iulia Harca (IFIN-HH, Bucharest ) Catalin Borcea (Horia Hulubei National Institute of Physics and Nuclear Enginee) Sergey Khlebnikov (Khlopin Radium Institute) Prof. Dan Mihai Filipescu (IFIN-HH, Bucharest ) Dr Sophia Heinz (5Dipartimento di Fisica “E. Pancini”, Universita de li t di di Napoli “Federico II”) Mrs Bettina Lommel (GSI) Mr Alessandro Pulcini (INFN) Salvatore Spinosa (5Dipartimento di Fisica “E. Pancini”, Universita de li t di di Napoli “Federico II)

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