Neutron-gamma ray combined detection device and method

A detection device and gamma-ray technology, which is applied in the field of neutron-gamma-ray joint detection device, can solve problems such as inability to measure gamma-rays

Pending Publication Date: 2020-10-16
INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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  • Abstract
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Problems solved by technology

[0005] Aiming at the deficiency that the prior art not only cannot measure gamma rays, but gamma rays themselves become the interference factor of neutron measurement, the present invention proposes a neutron-gamma ray joint detection device and a neutron-gamma ray joint detection method, which can Realize the joint measurement of neutrons and γ-rays in the neutron and γ-ray mixed radiation field, that is, use one detector to simultaneously measure neutrons and γ-rays

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  • Neutron-gamma ray combined detection device and method

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Embodiment Construction

[0020] The present invention will be further elaborated below in conjunction with the accompanying drawings.

[0021] Such as figure 1 As shown, the neutron-gamma joint detection device of the present invention includes a housing 8, a neutron measurement unit and a gamma ray measurement unit, wherein the neutron measurement unit includes a central electrode 2 and collecting electrodes I1 arranged on both sides of the central electrode And collecting electrode II 3, gamma ray measurement unit comprises a center electrode 5 and the collecting electrode I 4 and collecting electrode II 6 that are arranged on both sides of the center electrode, the center electrode 2 periphery of described neutron measurement unit is coated with fissile material layer 7. The collection electrode I 1 and the collection electrode II 3 of the neutron measurement unit and the collection electrode I 4 and the collection electrode II 6 of the gamma ray measurement unit are loaded with the same positive h...

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Abstract

The invention provides a neutron-gamma ray combined detection device and a neutron-gamma ray combined detection method. The detection device comprises a vacuum cavity shell, a neutron measurement unitand a gamma ray measurement unit, and the detection method obtains a net neutron signal by deducting a gamma signal output by the gamma ray measurement unit from a mixed signal output by the neutronmeasurement unit. According to the invention, combined measurement of neutrons and gamma rays in a neutron and gamma mixed radiation field can be realized, i.e., measurement of neutrons and gamma raysis realized simultaneously by using one detector.

Description

technical field [0001] The invention belongs to the field of new energy-nuclear power, and specifically belongs to the research field of fusion energy and fourth-generation fission energy. The invention specifically relates to a neutron-γ-ray combined detection device and method. Background technique [0002] Fusion energy devices such as laser ICF, Z-pinch and fourth-generation fission energy such as fast neutron reactors, high-temperature gas-cooled reactors and other large-scale devices will generate neutron and γ-ray mixed radiation fields. An important means of energy research. Existing detection methods can only detect neutrons and γ-rays separately. Since detectors usually have outputs for both neutrons and γ-rays, when measuring one of the rays, the other becomes noise that needs to be suppressed. [0003] The journal paper Radiation Measurements 73(2015) 46-50 discloses a "fission-electron collection" neutron detector, the working principle of which is: neutrons r...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T3/00G01T1/16
CPCG01T1/16G01T3/00
Inventor 王栋张传飞司粉妮蔡易平席志国杨彪彭星宇朱学彬王立宗胡青元
Owner INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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