Several new methods for the digital discrimination of neutrons and gamma-rays in a mixed radiation field are presented. The methods introduced discriminate neutrons and gamma rays successfully in the digital domain. They are mathematically simple and exploit samples during the life time of the pulse, hence appropriate for field measurements. All these methods are applied to a set of mixed neutron and photon signals from a stilbene scintillator and their discrimination qualities are compared.

In this paper, we present the results of digital processing of pulses produced by several types of detectors. We introduce a new high quality discrimination method, and the output from this new method is compared with those from classic methods. Also, a new function to determine separation quality of various discrimination methods is defined in this paper. Our results show how the quality of the particle type identification depends on the sampling rate as well as the method of sampled data processing.

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