Study on neutron – gamma pulse shape discrimination algorithms for scintillation detector. The four neutron - gamma pulsed shape discrimination algorithms fortheodel NE213 scintillation detector by using digital signal processing were developed. In this study, a pulse generator, pulse digitizer and neutron - gamma pulsed shape discrimination algorithms are simulated in Matlab, Simulink software. | DALAT UNIVERSITY JOURNAL OF SCIENCE Volume 6, Issue 3, 2016 281–292 281 STUDY ON NEUTRON – GAMMA PULSE SHAPE DISCRIMINATION ALGORITHMS FOR SCINTILLATION DETECTOR Phan Van Chuana*, Nguyen Duc Hoab, Nguyen Dac Chauc, Vuong Nu Minh Khued a b The Faculty of Physics, Dalat University, Lamdong, Vietnam The Faculty of Nuclear Engineering, Dalat University, Lamdong, Vietnam c Vietnam Naval Academy, Khanhhoa, Vietnam d The Communist Party Office, Dalat University, Lamdong, Vietnam Article history Received: September 28th, 2015 | Received in revised form: October 22nd, 2015 Accepted: March 16th, 2016 Abstract The four neutron - gamma pulsed shape discrimination algorithms for the model NE213 scintillation detector by using digital signal processing were developed. In this study, a pulse generator, pulse digitizer and neutron - gamma pulsed shape discrimination algorithms are simulated in Matlab, Simulink software. The results obtained show that the method to rise-time discrimination has a quality factor (Figure-of-Merits: FOM=), pulsed gradient analysis method (FOM = ), charge comparison method (FOM = ), and correlation pattern method (FOM = ). This result is the basis for building systems for measurements of neutron using scintillation detectors. Keywords: Correlation pattern method; FOM; Neutron-gamma pulse shape discrimination; Simulation of neutron and gamma pulse. 1. INTRODUCTION The neutron - gamma pulse shape distinguish (PSD) technique is very important in neutron radiation measurements using the scintillation detector. Some of the neutron detectors using liquid organic scintillation like NE213 provide the output pulse which has characteristic to help distinguishable with noisy gamma, which enables the neutron measurements to be more accurate. Besides, by applying the neutron - gamma discrimination technique, it is possible to measure the spectra of neutrons and gamma rays concurrently in a single measurement. Various neutron - gamma .
