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Method for measuring mass of radioactive substance through gamma camera and gamma spectrometer

A technology of radioactive substances and gamma cameras, applied in the field of nuclear radiation detection and analysis, can solve problems such as inaccurate source distribution parameters, and achieve the effect of highlighting substantive characteristics

Inactive Publication Date: 2014-07-30
SICHUAN INST OF MATERIALS & TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Clearly, the method employed by commercial gamma spectrum passive calibration software uses empirical, inaccurate source distribution parameters

Method used

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  • Method for measuring mass of radioactive substance through gamma camera and gamma spectrometer

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Embodiment Construction

[0020] In order to clearly illustrate the technical features of this solution, the solution will be described below through a specific implementation manner in conjunction with the accompanying drawings.

[0021] Integrate the gamma camera and the gamma spectrometer system hardware, the gamma camera and the carrier of the gamma spectrometer in the integrated system not only have the functions of lifting, rotating and horizontal movement, but also make the gamma camera and the gamma spectrometer have a fixed geometric relationship; System control, measurement and analysis are realized through a set of software; the integrated system has flexible and convenient mobile functions.

[0022] pass Figure 1 It can be seen that the count rate n of the characteristic gamma rays is obtained by measuring the gamma spectrometer 0 ; Shoot at least 3 two-dimensional images of the object to be measured with a gamma camera; reconstruct the three-dimensional distribution distribution function...

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Abstract

The invention provides a technical scheme of a method for measuring mass of radioactive substance through a gamma camera and a gamma spectrometer. By means of the technical scheme, the gamma camera can be used for obtaining a three-dimensional distribution function of tested substance so as to obtain accurate and reliable detecting efficiency, the radioactive decay formula is used for calculating the mass (activity) of radioactive substance in an object to be tested, the ability of measuring the mass (activity) of radioactive substance is improved, the application range is widened, and uncertainty of the gamma spectrometer measuring the mass (activity) of radioactive substance is reduced.

Description

technical field [0001] The present invention relates to the technical field of nuclear radiation detection and analysis, in particular to a method for measuring the quality of radioactive substances by using a gamma camera and a gamma spectrometer. Background technique [0002] Gamma cameras were first used to find the location of radioactive materials in the 1990s, and today gamma cameras are the main tool for quickly finding the two-dimensional location of radioactive materials. [0003] In the 1950s, gamma spectrometers have become the main tool for measuring gamma energy spectra. There are two methods for analyzing the mass (activity) of radioactive substances with a gamma spectrometer: 1) gamma spectrum standard sample calibration method; 2) gamma spectrum passive calibration method. In the 1990s, the commercial gamma spectrum passive calibration software was born, realizing the goal of measuring the mass (activity) of radioactive substances without using a standard so...

Claims

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Application Information

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IPC IPC(8): G01T1/178
Inventor 吴伦强韦孟伏张连平肖洒党晓军兰明聪邓大超齐连柱周亚林
Owner SICHUAN INST OF MATERIALS & TECH
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