Matrix and Position Correction of Shuffler Assays by Application of the Alternating Conditional Expectation Algorithm to Shuffler Data

Year
1992
Author(s)
P.M. Rinard - Los Alamos National Laboratory
Mark M. Pickrell - Los Alamos National Laboratory
Abstract
The 252Cf shuffler assays fissile uranium and plutonium using active neutron interrogation and then counting the induced delayed neutrons.1\"4 Using the shuffler, we conducted over 1700 assays of 55-gal. drums with 28 different matrices and several different fissionable materials. We measured the drums to diagnose the matrix and position effects on 252Cf shuffler assays. The matrices incorporated metals, neutron poisons, and hydrogen in densities ranging from 0