Experimental study of high-energy fission and quasi-fission with fusion- induced fission reactions at VAMOS++

¹ IGFAE – Universidad de Santiago de Compostela, E–15706 Santiago de Compostela, Spain
² GANIL, CEA/DRF-CNRS/IN2P3, BP 55027, F-14076 Caen Cedex 5, France
³ IPN Orsay, Université de Paris-Saclay, CNRS/IN2P3, F-91406 Orsay Cedex, France
⁴ LIP Lisboa, 1649-003 Lisbon, Portugal
⁵ IPHC Strasbourg, Université de Strasbourg-CNRS/IN2P3, F-67037 Strasbourg Cedex 2, France
⁶ LPC Caen, Université de Caen Basse-Normandie-ENSICAEN-CNRS/IN2P3, F-14050 Caen Cedex, France
⁷ Department of Physics, Chalmers University of Technology, SE-41296 Göteborg, Sweden
⁸ CENBG, IN2P3/CNRS-Université de Bordeaux, F-33175 Gradignan Cedex, France
⁹ CSNSM, CNRS/IN2P3, Université de Paris-Saclay, F-91405 Orsay, France

^* e-mail: dani.fernandez@usc.es
^** e-mail: manuel.fresco@usc.es
^*** e-mail: diego.ramos@ganil.fr

Published online: 8 December 2023

Abstract

Over the past decade, inverse kinematics has been increasingly employed in experimental studies of fission. This approach has yielded a wealth of new observables that can be obtained in single measurements, enabling their analysis and correlations. One ongoing application of this technique involves a series of experiments performed at GANIL using the variable-mode, large-acceptance VAMOS++ spectrometer. A recent experiment focused on examining the survival of nuclear structure effects at high excitation energy in both fission and quasi-fission. The results of the study involved a full isotopic identification of fragments, as well as an analysis of the elemental yields their relation to fission dynamics. The results indicate that fission and quasi-fission involve different mechanisms, which could be exploited to distinguish between the two phenomena.