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Gamma spectrum instrument capable of rapidly measuring uranium thorium potassium content in salt lake brine and measuring method

A technology for the content of brine and potassium in salt lakes, which is used in measurement devices, radiation measurement, radiation intensity measurement, etc., can solve the problems of single function, low degree of automation, simple data processing, etc., and achieves low analysis cost, high degree of automation, Small size effect

Inactive Publication Date: 2016-03-23
INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can directly, quickly, portable, and real-time measure the content of uranium, thorium, and potassium in solid samples or liquid samples such as salt lake brine, seawater, etc., with reliable, stable, and high-precision automatic online intelligent gamma spectrometer for measuring the content of potassium, uranium, and thorium. , so as to effectively solve the defects of low degree of automation, single function, dispersion, low precision, simple data processing, large volume and other defects in the existing technology, and overcome the low detection efficiency, inconvenient carrying and containing Security risks of reference sources

Method used

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  • Gamma spectrum instrument capable of rapidly measuring uranium thorium potassium content in salt lake brine and measuring method
  • Gamma spectrum instrument capable of rapidly measuring uranium thorium potassium content in salt lake brine and measuring method
  • Gamma spectrum instrument capable of rapidly measuring uranium thorium potassium content in salt lake brine and measuring method

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Embodiment 1

[0027] Example 1: see figure 1 , a gamma spectrometer for quickly measuring the content of uranium, thorium and potassium in salt lake brine, its main features are: the output signal of the detector is screened and shaped by the circuit, and then output to the input terminal of the amplitude analyzer by the anti-coincidence circuit, and the output signal of the amplitude analyzer is connected to the input terminal of the MCU single-chip microcomputer, the output terminal of the MCU single-chip microcomputer is respectively connected to the threshold adjustment terminal and the window adjustment terminal of the amplitude analyzer, the output terminal of the MCU single-chip microcomputer is also respectively connected to the LCD liquid crystal display panel and the keyboard, and the output terminal of the MCU single-chip computer is also passed through the data The bus is connected to the PC.

[0028] The material of the detector head is thallium activated cesium iodide crystal ...

Embodiment 2

[0037] Embodiment 2: The gamma spectrometer testing method of the described fast measurement uranium thorium potassium content in salt lake brine, its main feature is that the steps are: first adjust the appropriate threshold width of each channel of the detector so that the total energy peak of the nuclide to be measured in the sample The peak positions are all within the threshold range of each single channel of the detector. Turn on the power, press the "Settings" button, the screen will display the page directory, press the "↑↓" button to make the icon flash and move to "1: Backlight switch", press "Enter" key, the indicator light on the operation panel is on; continue to press the "↑↓" key to make the icon flash and move to "2: Average count setting", press the "Enter" key to set the 1~N (1≦N≦ 9, where N represents any number between the times of the selected average value), press the "Set" key to return; continue to press the "↑↓" key to make the icon flash and move to "3...

Embodiment 3

[0038] Embodiment 3: see figure 1 , a gamma spectrometer for quickly measuring the content of uranium, thorium, and potassium in salt lake brine, its main features are: the output end of the shaping amplifier is connected to the input end of a Single Channel Analyzer (SCA), and the output end of the amplitude analyzer is connected to The input end of the MCU single-chip microcomputer, the output end of the MCU single-chip microcomputer are respectively connected to the threshold adjustment end of the amplitude analyzer, the output end of the MCU single-chip microcomputer is also respectively connected to the LCD liquid crystal display panel and the keyboard, and the output end of the MCU single-chip microcomputer is connected to the PC through the data bus.

[0039] In the main working process of the invention, the electric signal converted by the high-sensitivity photomultiplier tube is processed by the multi-functional forming amplifier and the amplitude analyzer to select an...

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Abstract

The invention relates to a method used for measuring uranium / thorium / potassium content in a to-be-detected sample, belongs to the nuclear technology field and further relates to a gamma spectrum instrument capable of rapidly measuring the uranium / thorium / potassium content in salt lake brine. The gamma spectrum instrument is characterized in that an output signal of a detector passes through a discrimination and shaping circuit and is outputted through an anticoincidence circuit to an input end of an amplitude analyzer, an output end of the amplitude analyzer is connected with an input end of an MCU single-chip microcomputer, an output end of the MCU single-chip microcomputer is respectively connected with a threshold adjusting end and a window adjusting end of the amplitude analyzer and is further connected with an LCD liquid crystal display panel and a keyboard, and the output end of the MCU single-chip microcomputer is further connected with a PC through a data bus. The gamma spectrum instrument is advantaged in that high precision, rapid measurement, carrying convenience, high automation degree, function diversity, intelligent data processing and small volume are realized; the gamma spectrum instrument is mainly used for measuring natural uranium / thorium / potassium content in earth and rocks and the distribution data and facilitates geological survey guidance.

Description

technical field [0001] The invention relates to a measurement method for determining the content of uranium, thorium and potassium in a sample to be tested and its application in the field of nuclear technology. Background technique [0002] With the rapid development of my country's national economy, the demand for energy is increasing day by day. In recent years, in the process of potash fertilizer production, uranium and thorium ore exploration and salt lake development, how to accurately and quickly measure uranium, thorium and potassium in uranium and thorium deposits, salt lake brine and oil wells content has become an urgent problem to be solved. At present, there is no better measurement method at home and abroad. Traditional chemical analysis methods generally have a long analysis cycle, and it is difficult to implement them in the field with large analytical instruments. The radioactive instruments produced by foreign companies can only be used in specific occasio...

Claims

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Application Information

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IPC IPC(8): G01T1/20G01T1/202G01T1/167
CPCG01T1/2012G01T1/167G01T1/202
Inventor 李松林石国柱秦芝陈若富苏弘千奕宋海宏沈爱花李恒远
Owner INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI
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