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[en] Rates of neutron reactions have been measured by activation detectors in 177.5cm thick and about 100cm square sodium shields with the fast neutron reactor YAYOI as a source. Spatial distributions of gamma-ray dose rates have been also measured in the shield. The analysis of the experiment by DOT-3.5 shows disagreement above the measurement error range. The spatial distributions show rather good agreement with the experiments. Experiments on the fast neutron streaming through a slit-duct system have been performed. Neutron spectra of the source and in the duct have been obtained by using a NE213 spectrometer and proton recoil spherical gas proportional counters
Source
Nuclear Energy Agency, 75 - Paris (France). Committee on Reactor Physics; 432 p; ISBN 92-64-2118-3; 
; 1981; p. 337-344; OECD; Paris, France; Specialist's meeting on nuclear data and benchmarks for reactor shielding; Paris, France; 27 - 29 Oct 1980
; 1981; p. 337-344; OECD; Paris, France; Specialist's meeting on nuclear data and benchmarks for reactor shielding; Paris, France; 27 - 29 Oct 1980