Determination of Dead Time of Neutron Counting System for Use of Reactor Start up

The dead time is important parameter of neutron counting system for use of reactor start up. It isrelative to accurate determination of critical mass and the safety during reactor start up. So, it is importantthat dear time is measured accurately. There are many methods for measuring the dead time, but they arerare to be suitable for neutron counting system, which has wide variant range. Using the reactor as the neutron source, the neutron source intensity and the curve of counting rate,