An Application of Pulse Shape Discrimination Method to Obtain Pure Photopeak

Assist. Prof. Elif Ebru Ermiş

A pulse shape discrimination setup was developed and the pulse shape discrimination method was applied to γ-rays emitted from 137Cs radioisotope to test its discrimination performance. The setup was used to discriminate the photopeak radiations from the non-photopeak ones arising from scattering, backscattering, background, low-energy X-rays and electronic noise etc. To perform this, pulse shape discrimination method which is a kind of timing process was used. The discrimination was performed in the region very close to the photopeak of the radioisotope. The developed setup showed its success in the discrimination of non-photopeak signals from the original photopeak ones.