Year
1978
Abstract
Passive gamma-ray and neutron measurements have been made on irradiated MTR fuel at the Omega West Reactor. De- tectors utilized include a Ge(Li) for gamma spectroscopy, a U-235 fission chamber for thermal neutrons, and a smaller U-235 fission chamber with a beryllium photoneutron converter for detecting gamma-rays above 1.7 MeV. Measurements confirm that burnup can be closely correlated with the Cs-134/Cs-l37 ratio. A comparison of activity profiles taken with the three de- tectors indicates that the method based on (Y,n) reactions in beryllium is a promising technique.