Energy deposition systematics from neutron multiplicity studies

Results of survey experiments in which the neutron multiplicity distributions have been measured for a wide variety of systems using a 4π neutron detector are presented. Using both light and heavy ion projectiles, systems have been prepared with expected excitation energies ranging from about 100 MeV to more than 1000 MeV. After a brief of the techniques involved, the results of some of the experiments are described. Comparisons with statistical model calculations indicate that the energy deposition can be significantly below that estimated from linear momentum systematics. (authors). 9 refs., 3 figs