High-speed high-precision radionuclide 4 pion beta-gamma coincidence measuring instrument
A radionuclide and measuring instrument technology, applied in the field of nuclear electronics and fast electronics, can solve problems such as limited application scope, environmental compliance of radioactive sources, electronic noise interference, data acquisition sampling rate limitation, etc.
Pending Publication Date: 2021-09-10
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology
[0002] For a long time, there are three main factors that limit the calculation accuracy of the 4Πβ-γ measurement system: one is the limitation of data acquisition sampling rate, the other is the environmental compliance of radioactive sources and the interference of electronic noise, and the third is the cumbersome derivation of the counting correction formula and its limited scope of application
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[0031] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. But following embodiment only limits to explain the present invention, and protection scope of the present invention should comprise the whole content of claim, and by the narration of following embodiment, those skilled in the art can fully realize the whole content of claim of the present invention.
[0032] figure 1 with figure 2 The hardware composition and logical structure of the measurement system are shown respectively. The surveyor can use the usb3.0 interface to send configuration commands and status commands to the digitizer through the acquisition control module of the host computer, so that the digitizer can work in a suitable working mode. image 3 It is a block diagram of computing software, and the waveform data is input to the acquisition control module to determine the working parameters of the digitizer. The pulse informa...
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The invention discloses a high-speed and high-precision radionuclide 4 pion beta-gamma coincidence measuring instrument, which is characterized by comprising a digitizer and upper computer software, the upper computer software comprises an acquisition control module and calculation software, and the acquisition control module is connected with the digitizer and the calculation software; the digitizer comprises a high-speed acquisition module. The measuring instrument can meet output signal sampling requirements of most detectors in an application scene, and pulse information output by the detectors is reserved to the maximum extent; pulse signals can be screened from collected signals according to specific noise characteristics of the device; and a count correction method based on live time is developed. The use of the method is not limited to the selection of the live time mode of the system, and can also be conveniently expanded to the condition of considering the out of channel, and the tedious derivation of the correction formula under different conditions is eliminated.
Description
technical field [0001] The invention relates to a high-speed and high-precision radionuclide 4Πβ-γ coincidence measuring instrument, belonging to the fields of nuclear electronics and fast electronics. Background technique [0002] For a long time, there are three main factors that limit the calculation accuracy of the 4Πβ-γ measurement system: one is the limitation of data acquisition sampling rate, the other is the environmental compliance of radioactive sources and the interference of electronic noise, and the third is the cumbersome derivation of the counting correction formula and its limited scope of application. Aiming at the above three problems, the present invention proposes a high-speed data digitizer with digital noise reduction and digital coincidence calculation software based on live time method. Contents of the invention [0003] The purpose of the present invention is to provide a high-speed and high-precision radionuclide 4Πβ-γ coincidence measuring instr...
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Login to View More IPC IPC(8): G01T1/20G01T1/208G01T1/36
CPCG01T1/20G01T1/208G01T1/362
Inventor 钟科宋克柱杨俊峰李钰琨
Owner UNIV OF SCI & TECH OF CHINA