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Detection system and method for measuring electron relative light yield of scintillator to be tested

A detection system and scintillator technology, which is applied in the field of radiation measurement, can solve the problems of inaccurate measurement and the influence of X-ray escape on electron light yield measurement, and achieve the effect of simple structure, concise and efficient method, and improved detection efficiency

Active Publication Date: 2021-05-25
NORTHWEST INST OF NUCLEAR TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention aims at the problem that in the measurement of the recoil Compton electron luminescence response of the existing scintillator, when an external electron source is used, the measurement of the electron light yield cannot be accurately measured due to the influence of the surface effect and the escape of X-rays, and provides a method for measuring Detection system and method for electron relative light yield of scintillator to be measured

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  • Detection system and method for measuring electron relative light yield of scintillator to be tested
  • Detection system and method for measuring electron relative light yield of scintillator to be tested
  • Detection system and method for measuring electron relative light yield of scintillator to be tested

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Embodiment Construction

[0045] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0046] Such as figure 1As shown, this embodiment provides a detection system for measuring the relative light yield of scintillator electrons to be tested, including a gamma radiation source 1, a front-end lead collimator 2, a front-end detector, and a rear-end lead collimator 5 , the back-end detector and the oscilloscope 3 with waveform conforming function; the front-end detector includes the first photomultiplier tube 4; the back-end detector includes the second scintillator (not shown in the figure) and the second photomultiplier tube 6; the front-end detector The thickness of the lead collimator 2 is more than or equal to 20cm, and the diameter of its collimation hole is less than or equal to 5mm. The thickness of the rear-end vertical collimator 5 is ≥10cm, and the diameter of the collimation hole is ≤10mm.

[0047] The front-end lead ...

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Abstract

The invention relates to the technical field of radiation measurement, and aims at the problem that in the measurement of scintillator recoil Compton electron luminescence response, when an external electron source is used, the measurement of electron light yield cannot be accurately measured due to the influence of surface effects and X-ray escape, and provides a method A detection system and method for measuring the relative light yield of scintillator electrons to be measured; wherein the detection system for measuring the relative light yield of scintillator electrons to be measured includes a gamma radiation source, a front-end lead collimator, and a front-end detector , the back-end lead collimator, the back-end detector and the oscilloscope with the function of waveform conformity; the front-end detector includes the first photomultiplier tube; the back-end detector includes the second scintillator and the second photomultiplier tube; the back-end lead level The collimator is arranged on the receiving end side of the second photomultiplier tube; the second scintillator is arranged between the rear-end lead collimator and the second photomultiplier tube; the first photomultiplier tube and the second photomultiplier tube are respectively connected with the oscilloscope electrical connection.

Description

technical field [0001] The invention relates to the technical field of radiation measurement, in particular to a detection system and method for measuring the electron relative light yield of a scintillator to be measured. Background technique [0002] The most widely used system in radiation field measurement is a scintillation system composed of a photomultiplier tube (PMT) and a scintillator; it is mainly composed of a scintillator, a light collection part, and a photoelectric conversion device. Its working process is: radiation particles enter the scintillator, the atoms in the scintillator are excited to produce fluorescence, and the fluorescence is collected and irradiated to the surface of the photocathode of the photomultiplier tube (PMT) by using the light collection part, and the photons hit the light recoil on the photocathode Compton electrons, light recoil Compton electrons are multiplied on each dynode, and the output current signals are collected by the anode....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01T7/00
CPCG01T7/005
Inventor 易义成宋朝晖卢毅韩和同张侃管兴胤刘君红李刚
Owner NORTHWEST INST OF NUCLEAR TECH
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