Comprehensive investigation of fission yields by using spallation- and (p,2p)- induced fission reactions in inverse kinematics

¹ Centro de Investigación en Tecnoloxías Navais e Industriais, Universidade da Coruña, E-15403 Ferrol, Spain
² IGFAE, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain
³ CEA Bruyeres le Chatel, Chemin du Ru, 91297, Bruyères-le-Châtel, France
⁴ Technische Universität Darmstadt, Fachbereich Physik, Institut für Kernphysik, 64289 Darmstadt, Germany
⁵ IPN Orsay, 15 rue Georges Clemenceau, 91406, Orsay, France
⁶ CEA Saclay, IRFU/DPhN, Centre de Saclay, 91191, Gif-sur-Yvette, France
⁷ CINTECX, Universidad de Vigo, E-36200 Vigo, Spain
⁸ GSI Helmholtzzentrum für Schwerionenforschung, Planckstraße 1, D-64291 Darmstadt, Germany
⁹ Department of Physics, Lund University, P.O. box 118, 221 00 Lund, Sweden
¹⁰ INFN Laboratori Nazionali del Sud, Via Santa Sofia 62, 95123, Catania, Italy
¹¹ LIP and Faculty os Sciences, University of Lisbon, 1000-149 Lisbon, Portugal
¹² RBI Zagreb, Bijenicka cesta 54, HR10000, Zagreb, Croatia
¹³ Technische Universität München, James-Franck-Str 1, 85748, Garching, Germany
¹⁴ Institutionen för Fysik, Chalmers Tekniska Högskola, 412 96 Göteborg, Sweden
¹⁵ University of Guelph, 50 Stone Road E, N1G 2W1, Guelph, ON, Canada
¹⁶ Institut für Kernphysik der Universität zu Köln, Zülpicher Strasse 77, D-50937 Köln, Germany
¹⁷ School of Physics, Engineering and Technology, University of York, YO10 5DD York, UK
¹⁸ Institute for Basic Science, Center for Exotic Nuclear Studies, 34126, Daejeon, Republic of Korea
¹⁹ Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain
²⁰ Jozef Stefan Institute, Slovenia

^* Corresponding author: j.l.rodriguez.sanchez@udc.es

Published online: 26 May 2023

Abstract

In the last decades, measurements of spallation, fragmentation and Coulex induced fission reactions in inverse kinematics have provided valuable data to accurately investigate the fission dynamics and nuclear structure at large deformations of a large variety of stable and non-stable heavy nuclei. To go a step further, we propose now to induce fission by the use of quasi-free (p,2p) scattering reactions in inverse kinematics, which allows us to reconstruct the excitation energy of the compound fissioning system by using the four-momenta of the two outgoing protons. Therefore, this new approach might permit to correlate the excitation energy with the charge and mass distributions of the fission fragments and with the fission probabilities, given for the first time direct access to the simultaneous measurement of the fission yield dependence on temperature and fission barrier heights of exotic heavy nuclei, respectively. The first experiment based on this methodology was realized recently at the GSI/FAIR facility and a detailed description of the experimental setup is given here.