NaI(Tl) Summing Compton Spectrometer

Abstract

The paper describes a new method of measuring gamma‐ray energy by using two sodium iodide crystals. The sum of two pulses is to be taken: one from a crystal which scatters gamma rays by the Compton effect, and the other from a second crystal which receives the scattered photon. In comparison with the scintillation Compton spectrometer hitherto developed, this method is good both in efficiency and in resolution.