Multiple-decaying-source method for the determination of the dead time of a delayed-neutron counting system

Abstract An extension of the single-decaying-source technique was applied to measure the dead time of a delayed-neutron counting system. The three longest half-lives associated with the delayed neutrons emitted in 235 U fission were used in this analysis. A dead time of 6.3 μs was calculated, based on a detector system which obeyed an extendable model for dead-time behavior.