Study of Pulse Shape Discrimination of Sub-MeV Neutrons From Gamma-Rays with Liquid Scintillator

Digital neutron-gamma discrimination in a wide energy range using pulse reconstruction method

“…It has been finally decided to take the area under the decay region in the time interval shown in Fig. 3, up to 10% of pulse amplitude as recommended by Yoshioka (2011). The NGD curve can be produced by plotting the above integration in terms of peak amplitude.…”

“…The NGD has important applications in neutron flux/spectrum determination in heavy ion therapeutic systems, fast neutron (above tens of MeVs) production in spallation reactions (Yoshioka, 2011) and photoneutrons of about 1 MeV energy produced as a result of high-energy (above 12 MeV) X-ray interactions in medical linear accelerators (Esposito et al, 2008). A variety of NGD techniques such as zero-cross, Owen, time-of-flight, and charge comparison methods have been frequently used by many researchers around the world (Divani-Vais et al, 2012;Binaei Bash et al, 2013).…”

Neutron–gamma discrimination based on bipolar trapezoidal pulse shaping using FPGAs in NE213

“…Secondary neutrons from spallation reactions of the primary of a few hundred MeV/n have a significant potential to induce cancer. To improve the accuracy of neutron dose estimation, neutron production crosssection must be measured [2].…”

The Neutron-Gamma Pulse Shape Discrimination Method for Neutron Flux Detection in the ITER

“…Two routine methods using analogue electronics are the charge-comparison and the zero-crossing techniques [7] . The disadvantage of the charge-comparison technique is its poor neutrongamma discrimination for low-energy neutrons due to the distortion of pulse shapes [8] . The constant fraction discriminator (CFD) used in the zero-crossing technique is limited to one timing point in most cases [9] .…”