Experimental study of high-energy fission and quasi-fission dynamics 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: 26 May 2023

Abstract

During the last decade, the use of inverse kinematics in the experimental study of fission is bringing a wealth of new observables obtained in single measurements, allowing their analysis and their correlations. An ongoing application of this technique is the basis of a series of experiments performed with the variable-mode, large-acceptance VAMOS++ spectrometer at GANIL. A recent experiment has been focused on the survival of the nuclear structure effects at high excitation energy in fission and quasi-fission. The full isotopic identification of fragments, the fission dynamics and the ratio between the production of fragments with even and odd atomic numbers, the so-called proton even-odd effect, are shown. The latter shows a different mechanism for fission and quasi-fission that could be used to separate fission from quasi-fission.