Single channel pulse height analyzer realized by applying peak position detecting method

Abstract

A single channel pulse height analyzer realized by applying a peak position detecting method is characterized in that in the working circuit, detected nuclear pulse signals are subjected to filtering formation through an amplifier, and are outputted to an upper screening circuit, a lower screening circuit and a peak position detection circuit respectively through input circuits; the output signals processed by the upper screening circuit and the lower screening circuit are respectively inputted to the S end and the R end of an RS trigger circuit; the output signals processed by the lower screening circuit and the peak position detection circuit are respectively inputted to the input end of a gate circuit; the anticoincidence signals outputted by the RS trigger circuit and the coincidence signals outputted by the gate circuit are respectively inputted to an anticoincidence shaping circuit; the anticoincidence shaping circuit outputs counting signals. No manual dead time is introduced, the system dead time of the single channel pulse height analyzer is greatly reduced, the counting rate is improved, the structure of the circuit is simple, and the single channel pulse height analyzer can be suitable for detecting output signals of a nuclear radiation detector in common use.

Description

technical field [0001] The invention relates to the field of signal detection, in particular to a single-channel pulse amplitude analyzer. Background technique [0002] The nuclear physics signal is a series of random pulse signals, and each pulse represents a physical event. For example, when a ray is detected, a nuclear pulse is generated every time a ray is detected. The pulse width includes the time information of the ray, and the pulse amplitude includes The energy information of the ray. The pulse amplitude analyzer screens the nuclear pulse signal and converts the nuclear pulse signal into a standard digital signal. The digital signal output by the single-channel pulse amplitude analyzer has the same width and is mainly used for counting nuclear pulses. In order to increase the counting rate of the single-channel pulse amplitude analyzer, it is necessary to reduce the dead time of the single-channel pulse amplitude analyzer system, especially to reduce the system dea...

AI Technical Summary

Problems solved by technology

The width of this square wave signal is the system dead time increased by human factors, resulting in a low count rate

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