Parameter-adjustable nuclear pulse simulation method

Abstract

The invention discloses a parameter-adjustable nuclear pulse simulation method. In search of a nuclear instrument and a nuclear signal processing method, in order to verify the reliability of hardware and the processing method, a larger number of diversified nuclear pulse signals are needed usually. The parameter-adjustable nuclear pulse simulation method disclosed by the invention comprises the following steps of: generating amplitude and adjacent pulse time interval value complying with distribution of selected any energy spectrum and time spectrum through sampling according to the selected any energy spectrum and time spectrum; selecting appropriate detector circuit parameters to establish a parameterized model; and designing an appropriate current pulse shape and taking the appropriate current pulse shape as an exciting signal of the model, generating continuous signals which have random amplitude and adjacent pulse time and comply with excepted energy spectrum and time spectrum distribution according to the parameters, the random amplitude and the adjacent pulse time interval value, and discretizing and superposing the continuous signals to obtain a voltage value, namely a digital pulse wave form, of each moment. The discrete sequential values are subjected to digital-to-analog conversion and used as input signals of a follow-up circuit, and therefore, vivid and diversified radiant signals are provided for amplification, formation, discrimination, accordance and other processing as well as data analysis of the follow-up circuit. The result shows that the parameter-adjustable nuclear pulse simulation method can be used for generating various wave forms of pulse signals conveniently and flexibly through a parameterized model and can meet the requirement on nuclear pulse diversification in the search of the nuclear instrument and the nuclear signal processing method.

Description

technical field [0001] The invention relates to a nuclear pulse simulation method with adjustable parameters. Background technique [0002] In the research of nuclear instruments and nuclear signal processing methods, in order to verify the reliability of hardware and processing methods, a large number of diverse nuclear pulse signals are often required. The use of radioactive sources to generate pulse signals is often limited by conditions such as the workplace and time; in particular, long-term radiation exposure will have a serious impact on the health of workers. Therefore, it is very necessary to simulate the generation of rich and diverse nuclear random signals. Due to the randomness of radionuclide decay, the ionization, excitation, photoelectric conversion and electron multiplication in the detector are also random. If the output signal of the detector can be simulated according to the selected arbitrary energy spectrum and time spectrum, it will undoubtedly be of ...

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Problems solved by technology

Generating pulse signals with the help of radioactive sources is often limited by conditions such as the workp

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