Reaction-mechanism evolution for the system ²⁰Ne + ⁶⁰Ni at intermediate energies: from massive transfer to fragmentation

Abstract

Mass and charge distributions for heavy residues in the reaction ²⁰Ne + ⁶⁰Ni at 50 MeV/nucleon were measured by in-beam and off-line γ-ray spectrometry. The stacked foil method was used to obtain information about the distribution of the velocity component parallel to the beam direction for target-like residues. The comparison of the data to the predictions of a participant-spectator model indicates that an 8% width for the dissipated energy distribution accounts for the observed projected ranges.