Iterative Response Correction for a Scintillation Spectrometer

Abstract

A system is described which facilitates rapid correction of extensive data on radiation spectra, measured with a NaI(Tl) scintillation crystal. It employs a simple interative procedure and a criterion for the selection of a "best" approximation to the incident spectrum. The method is particularly suitable for use with an automatic computer. A preliminary test for the convergence of the iterations has been developed, and considerable experimental evidence is given for the validity of the solution. The response of the detector has been measured experimentally and is represented by a single 49th order matrix. The energy range may be altered simply by substituting a different response matrix in the correction program.