Nuclear Science and Engineering / Volume 22 / Number 1 / May 1965 / Pages 102-110
Technical Paper / dx.doi.org/10.13182/NSE65-A19767
Articles are hosted by Taylor and Francis Online.
A new method for determining the angular and energy distributions of an anisotropic fast-neutron flux by using nuclear emulsions based on the proton-recoil method is proposed. The relation between the distributions of neutron flux and proton-recoil tracks is analyzed, and formulas for obtaining the angular distribution and energy spectrum of the neutron flux from the measurement of proton-recoil tracks are derived. Measurements were made to investigate the accuracy of this method with the emulsion plate, which was irradiated inside a natural uranium system. The experimental results show that the measurement of the anisotropic component, which hitherto could not be measured, is possible.