Power spectrum analysis method, power spectrum analysis system and Gamma ray detection system

Abstract

The invention relates to a power spectrum analysis method. The method comprises the steps: converting particle energy into an initial pulse signal, processing the initial pulse signal into a step pulse signal, converting the step pulse signal into a rectangular pulse signal after pulse shaping of the step pulse signal, enabling the pulse amplitude of the rectangular pulse signal to be a set value, enabling a corresponding relation to be formed between the pulse width of the rectangular pulse signal and the pulse amplitude of the step pulse signal, measuring the pulse width of the rectangular pulse signal and corresponding pulse counting to obtain the pulse width spectrum of the rectangular pulse signal, converting the pulse width spectrum into a pulse amplitude spectrum according to the corresponding relation between the rectangular pulse width and the step pulse amplitude or directly converting the pulse width spectrum into a power spectrum of particles according to a corresponding relation between the rectangular pulse width and the energy of particles. The invention also relates to a power spectrum analysis system and a Gamma ray detection system. The invention helps to solve the problem of the prior art that a power spectrum analysis process contains a complicated A / D converting circuit and thus the integration level is difficult to improve.

Description

technical field [0001] The invention relates to a particle detector, in particular to an energy spectrum analysis method, an energy spectrum analysis system and a gamma ray detection system. Background technique [0002] For particle detectors, the two most important physical quantities are energy and flux. The system for statistical analysis of these two physical quantities is the energy spectrum analysis system of the particle detector, which is commonly called a multi-channel analyzer. The particle detector converts the particle energy into an electronic pulse signal. A particle usually generates a pulse. The amplitude of the pulse corresponds to the energy of the deposited particle, and the number of pulses corresponds to the number of particles. The pulse is counted according to the magnitude of the pulse amplitude, which is the so-called multi-channel Finally, the statistical results of the number of particles according to the energy distribution can be obtained, that ...

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Problems solved by technology

[0007] The present invention is made in view of the above problems, and its purpose is to solve the problem that the energy spectrum analysis system in the prior art is difficult to improve the integration level because it contains complex A / D conversion circuits

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