Influence of multiple sources on the two-neutron correlation function in Ni-induced, intermediate energy, heavy ion reactions

The strength of the neutron-neutron correlation function from the E=45A MeV Ni-58+Al-27, Ni-nat, and Au-197 reactions depends on the neutron parallel velocity. This indicates the presence of multiple sources of neutron emission. We find these sources consistent with a dissipative, binary reaction mechanism as it is described by, e.g., Boltzmann-Uehling-Uhlenbeck calculations.