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Neutron composite detection device

A composite detection and neutron detector technology, applied in the field of radiation measurement, can solve the problems of low detection efficiency of slow neutron detectors, and achieve the advantages of volume and weight, and convenient use.

Pending Publication Date: 2018-04-27
CHINA NUCLEAR CONTROL SYST ENG
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to provide a neutron composite detection device to solve the problem of low detection efficiency of traditional moderators with slow neutron detectors

Method used

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Embodiment Construction

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] Such as figure 1 A neutron compound detection device shown includes an aluminum shell 1, a magnesium oxide powder layer 2, a plastic scintillator 3, 6 LiI(Eu) scintillator 4, optical coupling agent 5, sealant 6 and quartz glass 7.

[0030] The aluminum shell 1 is in the shape of a cylinder, used for light protection and support, and has a thickness of 0.5mm.

[0031] The magnesium oxide powder layer 2 is uniformly arranged on the inner side wall of the aluminum shell 1 for reflecting flashing light, with a thickness of 1 mm.

[0032] The plastic scintillator 3 has a cylindrical structure and is arranged inside the magnesium oxide powder layer 2 .

[0033] said 6 The LiI(Eu) scintillator 4 is a solid cylinder, located inside the plastic scintillator 3, and closely attached to the plastic scintillator 3, and the two can be co...

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Abstract

The invention relates to the technical field of radiation measurement, and specifically discloses a neutron composite detection device. The neutron composite detection device comprises an aluminum shell, a magnesia powder layer arranged on the inner side wall of the aluminum shell, plastic scintillators arranged on the inner side of the magnesia powder layer, <6>LiI(Eu) scintillators arranged on the inner side of the plastic scintillators, and quartz glass arranged above the aluminum shell, the magnesia powder layer, the plastic scintillators and the <6>LiI(Eu) scintillators. The neutron composite detection device can be directly coupled with a photomultiplier, can be used as a neutron detector capable of measuring fast neutrons and slow neutrons with the addition of an appropriate electronic circuit, and the detector does not need to additionally arrange a moderator structure on the outside, thus the neutron composite detection device has great advantages in size and weight, and is convenient for the operator to use.

Description

technical field [0001] The invention belongs to the technical field of radiation measurement, and in particular relates to a neutron compound detection device. Background technique [0002] With the vigorous development of my country's nuclear industry and nuclear-related fields, the demand for neutron detection is increasing, mainly in: the rationality of neutron shielding design; the amount of neutron dose to people; the status of neutron field distribution, etc. . In order to achieve the above, it is necessary to measure the fluence rate, dose rate, neutron energy spectrum, etc. [0003] At present, neutron detectors have their own advantageous detection range, that is, the detection efficiency of different neutron detectors depends on the energy of the detected neutrons, for example 10 BF 3 Proportional counter tube, 6 Li glass, 6 LiI(Eu), 3 Neutron detectors such as He proportional counter tubes are mainly used to measure slow neutrons, and plastic scintillators, o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T3/06
CPCG01T3/06
Inventor 张庆威王婷婷马刚
Owner CHINA NUCLEAR CONTROL SYST ENG
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