Patent ID: 8044366
Filing Date: 2011-10-25
Classification: G01T

Abstract:
1. A method for applying dead-time corrections to a passive neutron multiplicity counter, the dead-time parameters comprising: a characteristic dead time parameter (“τ”); an empirical Doubles dead-time parameter (“τ D ”); and an empirical Triples dead-time parameter (“τ T ”), the method comprising: (a) determining an expected count range of the passive neutron multiplicity counter; (b) measuring one or more (c) determining a non-dead-time corrected Singles, Doubles, and Triples rate for the one or more sources; (d) calculating the Doubles to Singles ratio; (e) calculating the Triples to Singles ratio; (f) calculating the Triples to Doubles ratio; (g) determining a minimum chi-square distribution of the Doubles to Singles ratio, the Triples to Singles ratio, and the Triples to Doubles ratio by adjusting the dead-time correction parameters τ, τ (h) establishing optimum dead-time correction parameters for τ, τ (i) applying the optimum dead-time correction parameters to the calibration of the passive neutron multiplicity counter.