Further Analysis of Measuring α Eigenvalue of Subcritical System by Pulsed Neutron Method

The pulsed source method is one of the methods to confirm the time multiplication constant α eigenvalue for a subcritical reactor. Practically its applicability is determined by the characteristic of the neutron source. The analytic and numerical methods were both used to analyze the affect of the temporal characteristic of dense plasma focus source in the pulsed neutron method. The result indicates that the requirement of the temporal characteristic of dense plasma focus source in the pulsed neutron method is ultra fast and ultra short.