COMPTON ELECTRON SUPPRESSION IN THE GAMMA-RAY SPECTRA OF Ra (B + C), Co60, AND Ta182

Abstract

A method of suppression of the Compton electron background present in photoelectron spectra is described. The method employs an anticoincidence element which eliminates Compton electron pulses in the spectrometer detector counter and leaves photoelectron pulses unaffected. The technique has been applied to the photoelectron spectra of Co60, Ta182, and Ra (B + C). Evidence is presented for a previously unreported 1.01 Mev. gamma-ray transition in Ta182. The spectrum of Ra (B + C) is compared with the spectra reported by Ellis and by Latyshev. Some of the new transitions found by Latyshev are confirmed. Other gamma-rays not reported by other workers are presented here.