Energy corrections in pulsed neutron measurements

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Abstract
In the one-group model applying thermal neutron dynamic parameters, average dynamic parameters including the energy distribution of thermal neutrons are used instead of the one-velocity approximation for a two-component system. Next, the diffusion cooling correction is introduced into the thermal neutron average dynamic diffusion coefficient, into the dynamic material buckling, and into the Maxwellian distribution for thermal neutrons. An example is given for spherical geometry. The relation between the experimental pulsed parameters and the definitions for the average macroscopic cross-sections are given for hydrogenous media. Results of the measurements for the system of concentric spheres are presented.

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