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Active material detection system and method using multichannel spectrometer

A technology of radioactive substances and multi-channel spectrometers, which is applied in the field of radioactive substance detection systems, can solve the problems of not using rays and poor energy resolution of rays, and achieve the effects of reduced workload, low operating costs, and good compatibility

Active Publication Date: 2009-07-01
NUCTECH CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, plastic scintillators have poor energy resolution for rays, and are generally not used for energy measurement and nuclide identification of rays.

Method used

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  • Active material detection system and method using multichannel spectrometer
  • Active material detection system and method using multichannel spectrometer
  • Active material detection system and method using multichannel spectrometer

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Embodiment Construction

[0017] figure 1 A radioactive material detection system 100 according to an embodiment of the invention is shown. The radioactive substance detection system 100 includes a multi-channel spectrometer 101 and a data processing device 102 . The multi-channel spectrometer 101 is similar to a traditional multi-channel spectrometer, including a scintillator 111 , a photomultiplier tube 112 , an electronic amplifier 113 and a multi-channel pulse analyzer 114 . The multi-channel spectrometer 101 obtains the multi-channel energy spectrum information of the rays incident into the multi-channel spectrometer 101 , and the energy calibration of the multi-channel spectrometer can be performed by using a standard radiation source to obtain energy calibration parameters. In a preferred embodiment, the energy calibration of the multi-channel spectrometer using a standard radioactive source can be expressed as:

[0018] E. i =A*i+B, i=1,2,3,...,1;

[0019] Where Ei represents the energy of ...

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Abstract

The invention provides a radioactive material detection system utilizing multi-path spectrometer and a method thereof. The invention further provides a data processing device applied in the radioactive material detection system, for processing the environment reference background spectrum and the measurement energy spectrum of an object which are represented by multi-path energy spectrum, to obtain the energy region information of the detection ray. The data processing device comprises an energy region division device for degenerating the multi-path energy spectrum into an energy spectrum of finite paths while each energy spectrum after degeneration represents one energy region; a degenerate spectrum computing device for computing bottom degenerate spectrum and measuring degenerate spectrum according to the background spectrum and the measurement energy spectrum, correspondingly to the degenerated finite-path spectrum; a measurement increase rate spectrum computing device for computing a measurement increase rate spectrum based on the calculated bottom degenerate spectrum and the measurement degenerate spectrum; a peak searcher for searching the peak value of the calculated measurement increase rate spectrum; and an energy region determine information device for determining the energy region corresponding to the rays of the radioactive material based on the peak value in the measurement increase rate spectrum.

Description

technical field [0001] The present invention relates to a radioactive substance detection system using a multi-channel spectrometer and a method used therein, and in particular to a method for detecting radioactive substances by degenerating multi-channel energy spectra generated by a multi-channel spectrometer to perform high-speed peak-seeking Radioactive material detection system and method used therein. Background technique [0002] A multi-channel spectrometer consisting of a scintillator, a photomultiplier tube, an electronic amplifier, and a multi-channel pulse analyzer (which also has an amorphous, photomultiplier-free type) is used to detect gamma rays and perform nuclide identification, The typical operation process is as follows: the scintillator absorbs (or partially absorbs) rays, the crystal emits light and converges the light into a photomultiplier tube; The electrical pulse is shaped and amplified by the chemical amplifier; then the multi-channel pulse analy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/16G01T1/203G01T1/36
CPCG01T1/362G01T1/36
Inventor 阮明简应荣赵崑林津
Owner NUCTECH CO LTD
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