Neutron yields from 1Â GeV/nucleon 238U ion beams on Fe target

Yields of neutrons produced by a 238U ion beam of 1 GeV/nucleon kinetic energy impinging on a thick Fe target were measured resulting in distributions differential in neutron angle (0° < ϑn < 20°) and in kinetic energy (Tn > 50 MeV). The data serve in radiation protection planning for next-generation rare-isotope beam facilities. The experimental data are contrasted with predictions from transport codes as currently used in radiation shield design studies.