SECONDARY NEUTRON SPECTRA FROM NEUTRON INTERACTIONS IN A THICK CARBON SAMPLE

摘要

The spectra of secondary neutrons produced by neutron interactions in a thick (~3 mean free path) sample of carbon have been measured as a function of the incident neutron energy over the range 1 to 20 MeV. A linac (ORELA) was used as a white neutron source with a 48-m flight path. Incident energy was determined by time-of-flight, while secondary spectra were obtained through pulse-height unfolding techniques. The results of the measurement are compared to calculations based on the current evaluated data file (ENDF/B 1274).