Inclusive neutron multiplicity distributions have been measured for 47
5 MeV, 2 GeV proton- and 2 GeV He-3-induced reactions on Ag, Au, Bi, U
targets. There is general agreement between these multiplicity data a
nd results of intranuclear cascade calculations. The results indicate
a broad distribution of excitation energies with 10% of the events exc
eeding 500 MeV. For a thermalized nucleus this would translate into te
mperatures exceeding 5 MeV.