  Pulse shape discrimination (PSD) is crucial for non-proliferation and
security applications, where fast neutrons need to be identified and measured
in the presence of a strong gamma-ray background. The traditional
charge-integration-based PSD method requires the storage and processing of
hundreds of samples for every single pulse, which is time- and memory-consuming
for high-density channel applications. In this work, we explored the
possibility of implementing PSD using a commercial ASIC that allows the user to
adjust the pulse shaping time. We demonstrated that PSD can be achieved by
maximizing the difference between the pulse shaping circuit's responses to
neutron and gamma-ray pulses.
