Two different sources of fast forward-emittedα-particles in heavy-ion reactions

For the reaction 290 MeV20Ne+197Au the number of neutrons emitted in coincidence witha-particles is used to discriminate between two equally important but qualitatively different mechanisms for the emission of fasta-particles. They are connected with low and high inelasticity, respectively, and the resultinga-particles differ in mean velocity and velocity distribution.