A Gamma Spectroscopy Method at High Count Rate

A measurement method and a technology of gamma energy spectrum, which are applied in the field of gamma energy spectrum measurement under high count rate, can solve the problem that the energy resolution of the high count rate spectrometer is difficult to guarantee, and achieve a simple system structure and excellent energy resolution. Indicators, low cost effect

Active Publication Date: 2016-08-24
NORTHWEST INST OF NUCLEAR TECH
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Problems solved by technology

[0008] In order to overcome the limitation of the traditional electronic system on the measurement count rate of the spectrometer and solve the problem that the energy resolution of the conventional high count rate spectrometer is difficult to guarantee, the present invention provides a ray energy spectrum measurement suitable for high count rate and conventional count rate method

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  • A Gamma Spectroscopy Method at High Count Rate
  • A Gamma Spectroscopy Method at High Count Rate
  • A Gamma Spectroscopy Method at High Count Rate

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Embodiment Construction

[0036] Below by example the present invention is further illustrated.

[0037] In the gamma energy spectrum measuring method under high counting rate, the output of the detector is firstly connected with the input of a high-speed analog-to-digital conversion device, and the output of the high-speed analog-to-digital conversion device is connected with the input of a digital signal processing device.

[0038] Before the measurement, several ray sources with known energy are used to calibrate the system, and the conversion relationship between signal integral charge and ray energy is obtained.

[0039] Then the output current signal of the detector is directly converted into a digital signal, and the digital signal processing device processes the converted digital signal, extracts information representing the energy of the radiation to be measured, and gives the energy amplitude spectrum of the radiation to be measured.

[0040] figure 2 It is a schematic diagram of an applica...

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Abstract

The invention discloses a gamma energy spectrum method under high counting rate. Firstly, the detector output is connected with the input of a high-speed analog-to-digital conversion device, and the output of the high-speed analog-to-digital conversion device is connected with the input of a digital signal processing device. The output current signal of the detector is directly converted into a digital signal, and the converted digital signal is processed to extract information representing the energy of the ray to be measured, thereby giving the energy spectrum of the gamma ray to be measured. The invention mainly solves the problem that the conventional spectrometer electronics system limits the measurement count rate of the spectrometer and the energy resolution of the conventional high count rate spectrometer is difficult to guarantee. The present invention can realize 10 6 Gamma spectrum measurement at cps or higher count rate, and can guarantee excellent energy resolution.

Description

technical field [0001] The invention relates to the technical field of energy spectrum measurement, in particular to a gamma energy spectrum measurement method at a high count rate. Background technique [0002] The energy parameter is one of the important parameters of the particles or rays emitted by nuclear radiation. In the basic research of nuclear physics and various applications of nuclear radiation measurement, the energy information of the rays is obtained, that is, the measurement of the nuclear radiation energy or the intensity of nuclear radiation varies with the energy. The distribution relationship (that is, the energy spectrum) is of great significance. [0003] Conventional energy spectrum measurement methods use spectrometers based on ionizing radiation, such as sodium iodide spectrometers, high-purity germanium spectrometers, etc. Spectrometers based on ionizing radiation have the advantages of high energy measurement accuracy, modular system design, and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01T1/36
Inventor 谭新建宋朝晖渠红光卢毅张侃
Owner NORTHWEST INST OF NUCLEAR TECH
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