Simple Low Energy Gamma Ray Spectral Analysis Using Large Nal(Tl) Scintilation Spectrometers

Abstract

A simple method of conversion of pulse-height distributions measured with a large Nal (Tl) scintillator to energy spectra of gamma rays is described. This method is quite adequate for a low energy region where the peak-to-total ratio is large and for the application of approximate analysis in the outside field of the strict gamma ray spectroscopy. In practical application of this method one needs to know only the peak-to-total ratio and efficiency of the scintillation counter as a function of photon energy. Simulation by a calculation was carried out for the purpose of demonstrating the utility of this method.