Abstract and subjects
The n-p scattering angular distribution was measured with 14.9 MeV incident neutrons using the traditional time-of-flight technique with neutron-gamma discrimination. The scattering angle varied from 20 degrees to 65 degrees (laboratory system) in 5 degrees incremental steps. The efficiency of the neutron detectors was measured in the energy range 2-9 MeV relative to the Cf-252-standard, and was calculated using Monte Carlo methods in the 2-14 MeV energy range. Two methods of analysis were applied for experimental and simulated data: a traditional approach with a fixed threshold, and a dynamic threshold approach. The present data agree with the ENDF/B-VII evaluation for the shape of n-p angular distribution within about 1.5%.