Abstract
The intranuclear-cascade-evaporation model has been used to predict the neutron production from nonelastic interactions of protons with lead and uranium. These model predictions for a 590 MeV proton beam were compared with measurements recently made at the SIN facility. In general, for both lead and uranium, the model predicts approximately the correct neutron production in the evaporation region, but over-predicts the neutrons around 15 MeV, whereas the high-energy (>100 MeV) neutrons are substantially underrepresented. The neutron production in the evaporation region proved to be sensitive to the assumed level-density parameter in the model. The charged pion-production cross section was also measured and found to be in agreement with SIN measurements.
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