Analyses of High Energy Neutron Streaming Experiments Using DUCT-I

Implementing the updated high energy neutron albedo data calculated by the NMTC/JAERI97 and the MCNP-4A with JENDL-3.2 based library, the simplified streaming calculation code was improved to make DUCT-III. It was applied to analyses of the high-energy neutron streaming benchmark experiments. The code satisfactorily reproduced the measured non-threshold reaction rates and the Monte Carlo calculations. As for threshold reactions, however, its reproducibility of the measurement was seen to be poor.