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A lithium glass detector and a direct-reading neutron dosimeter using the detector

A detector and lithium glass technology, applied in the field of nuclear radiation measurement, can solve the problems of low detection efficiency and easy deliquescence, and achieve the effects of strong anti-interference ability, light weight and high neutron detection efficiency

Active Publication Date: 2020-05-22
CHINA NUCLEAR CONTROL SYST ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to propose a gamma-suppressing performance, high detection efficiency, process Simple detector suitable for neutron dosimeter

Method used

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  • A lithium glass detector and a direct-reading neutron dosimeter using the detector
  • A lithium glass detector and a direct-reading neutron dosimeter using the detector

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Embodiment Construction

[0023] The description of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] figure 1 Be a kind of lithium glass detector of the present invention, comprise 6 Li glass scintillator 1, light guide 2, optical glass glue 3, reflective layer 4, photoelectric converter 5, aluminum light shield 6, optical coupling agent 7, charge sensitive amplifier 8 and counting processing circuit 9;

[0025] The shape of the light guide 2 is a cube, 6 surfaces are polished, and 5 surfaces are respectively pasted with 5 pieces of optical glass glue 3 6 The Li glass scintillator 1, the other side of the light guide 2 is the light output surface, which is connected with the sensitive area of ​​the photoelectric converter 5 by an optical coupling agent 7; 6 The outer surface of the Li glass scintillator 1 is coated with a reflective layer 4; the outer surface of the reflective layer 4 is wrapped with an al...

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Abstract

The invention relates to a lithium glass detector which comprises 6Li glass scintillators, a light guide, optical glass adhesives, reflective layers, a photoelectric converter, an aluminum light shield, an optical coupling agent, a charge sensitive amplifier and a counting processing circuit. The shape of the light guide is a square, six surfaces are polished, five 6Li glass scintillators are pasted to five surfaces of the six surfaces by the optical glass adhesives, the other surface is a light output surface and is connected to a sensitive area of the photoelectric converter with the optical coupling agent, the outer surfaces of the 6Li glass scintillators are coated with the reflective layers, and the reflective layers are coated with the aluminum light shield. The scintillators are 6Li glass flicker piece structures, the thickness of the pieces is 0.5 to 2 mm, and the pulse amplitude of gamma is significantly reduced. The lithium glass detector is suitable for the application ofa direct-reading neutron dosimeter and has the advantages of high neutron detection efficiency, a small size, a light weight, low power consumption and high anti-interference ability.

Description

technical field [0001] The invention relates to the technical field of nuclear radiation measurement, in particular to a lithium glass detector and a direct-reading neutron dosimeter using the detector. Background technique [0002] The direct-reading neutron personal dosimeter is mainly used for personal dose monitoring of neutron rays by radioactive workers, reminding personnel whether the neutron dose in the working environment exceeds the standard, and whether protective measures should be taken. The neutron dosimeter has the characteristics of ultra-threshold alarm, intuitive reading, miniaturization and portability. [0003] Due to the characteristics of small size, low power consumption, light weight, and fast response, the selection of neutron detectors is very limited for direct-reading neutron personal dosimeters. At present, the detectors used for direct-reading neutron personal dosimeters at home and abroad include silicon semiconductor detectors and 6 LiI(Eu) ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01T3/06G01T3/00
CPCG01T3/00G01T3/06
Inventor 王婷婷张庆威
Owner CHINA NUCLEAR CONTROL SYST ENG
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