Insight into the Fission Process from Surrogate Reactions in Inverse Kinematics

Abstract

Innovative experiments are conducted to widen our approach to fission, aiming notably at a complete identification and characterization of the fragments and the study of unstable fissioning systems. In the GANIL facility, full fission-fragment distributions and fragment kinetic energies are measured, thanks to the inverse kinematics technique and the magnetic spectrometer VAMOS. The access to the scission-point information is possible thanks to the low-energy regime. The initial excitation energy of the systems is also determined due to the well-defined transfer reactions. In this work, fission yields and fission-fragment kinetic energies of 239U, as well as the evolution of the yields with the initial excitation energy of 240Pu, are presented.