Transformation of Bremsstrahlung Photoneutron Data to Data Corresponding to Monochromatic Gamma Excitation

Abstract

Using the count-ratio technique described by Thies and Böttcher one can coarsely measure with a multi-BF3-counter neutron detection system the 4p-integrated neutron spectrum, neutron mean energies, and related functions in photoneutron experiments using bremsstrahlung, It is shown here how the bremsstrahlung photoneutron data can be used to calculate the equivalent data that correspond to an idealized experiment using monochromatic ?-rays. Simple formulae are derived which permit an estimate to be made of the accuracy of the transformed neutron data.