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A detection device and detection method for direct neutron photography nondestructive detection of radioactive samples

A detection device and non-destructive testing technology, which is applied in the use of radiation for material analysis, etc., can solve the problems of neutron photography non-destructive testing of radioactive samples, and achieve the effect of reducing the impact

Active Publication Date: 2022-07-01
CHINA INSTITUTE OF ATOMIC ENERGY
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Problems solved by technology

However, in the direct neutron imaging method, the neutron imaging detection system is usually very close to the sample, and neutron photography non-destructive testing for radioactive samples is not possible

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  • A detection device and detection method for direct neutron photography nondestructive detection of radioactive samples
  • A detection device and detection method for direct neutron photography nondestructive detection of radioactive samples
  • A detection device and detection method for direct neutron photography nondestructive detection of radioactive samples

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Embodiment Construction

[0016] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiment is one, but not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0017] It should be noted that, unless otherwise defined, the technical or scientific terms used in the present application shall have the usual meanings understood by those with ordinary skill in the art to which the present invention belongs. If descriptions such as "first" and "second" are involved in the whole text, the descriptions such as "first" and "second" are only us...

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Abstract

The invention discloses a detection device for direct neutron photography nondestructive detection of radioactive samples, comprising: a neutron source, a sample stage, a neutron optical path transmission system and a neutron detection system. The neutron source, the sample stage, the neutron optical path transmission system and the neutron detection system are arranged in sequence along the first direction. By arranging a neutron optical path transmission system between the sample stage and the neutron detection system, and the length of the neutron optical path transmission system can be set according to the properties of the detection sample, etc., the distance between the detection sample and the neutron detection system is lengthened. The distance can greatly reduce the influence of the radioactivity of the detection sample on the neutron imaging detection system, and hardly affect the detection imaging of the neutron detection system. In this way, the detection device for direct neutron photographic nondestructive testing of radioactive samples of the present invention can use the direct neutron imaging method to perform neutron photographic nondestructive testing on radioactive samples.

Description

technical field [0001] The invention relates to the technical field of radioactive material detection, in particular to a detection device and a detection method for direct neutron photography nondestructive detection of radioactive samples. Background technique [0002] Neutron photography is a non-destructive testing technique. Neutron photography has a wide range of applications due to the advantages of neutrons with deep penetration and distinguishing between isotopes and adjacent elements. Neutron imaging techniques can be divided into direct neutron imaging methods and indirect neutron imaging methods. Among them, the direct neutron imaging method is more widely used. However, in the direct neutron imaging method, the neutron imaging detection system is usually very close to the sample, and it is impossible to perform neutron photographic nondestructive detection of radioactive samples. SUMMARY OF THE INVENTION [0003] The main purpose of the present invention is...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N23/05
CPCG01N23/05
Inventor 陈东风魏国海孙凯刘蕴韬贺林峰武梅梅李正耀焦学胜郝丽杰李玉庆韩松柏王洪立王雨
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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