HLNC calibration and application to waste measurement

This paper addresses problems of calibration and estimation of a parameter, p{sub o}, in high level neutron coincidence counting (HLNC) measurement. The presentation begins with a deductive approach, based on the generally accepted physical equations which are satisfied by the total and coincidence count rates. A new approach for the estimation of p{sub o} via measurement and a new calibration procedure consistent with the physical theory of coincidence counting measurement are presented. The approach is compared with the existing conventional approach in which possible inconsistency with the theoretical model is shown. In addition, the original model for neutron coincidence counting in a multiplying medium was extended to simultaneously account for the possible presence of poison, as well as for the neutron detection. The equations suitable for the data analysis of measurement of waste and their criteria are given.