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Thermal neutron detector and manufacturing method thereof

A thermal neutron and detector technology, applied in the field of thermal neutron detectors, can solve problems such as the inability to realize the preparation of micro-channel plates, the influence of the preparation process of micro-channel plates, etc.

Inactive Publication Date: 2012-01-11
TSINGHUA UNIV +1
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  • Abstract
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Problems solved by technology

However, this method is subject to certain limitations - too much 10B2O3 or natGd2O3 cannot be added to ordinary glass, otherwise the performance of the glass will change, which will affect the preparation process of the microchannel plate, making it difficult or impossible to realize the microchannel Plate preparation

Method used

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  • Thermal neutron detector and manufacturing method thereof
  • Thermal neutron detector and manufacturing method thereof
  • Thermal neutron detector and manufacturing method thereof

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Embodiment Construction

[0016] figure 1 A typical structure of an existing microchannel plate is shown. As shown in the figure, it can be seen that the microchannel plate is a sheet of glass composed of a large number of glass tubes. figure 2 then shows that the sheet glass along the figure 1 The cross-sectional structure in the normal direction shown in . from figure 2 It can be seen that the microchannel plate is composed of a large number of identical aperture structures. The diameter of each aperture is D, generally around 10 μm, and the inside of the aperture is a vacuum. There is glass between the apertures, and the thickness of the glass is W, generally several μm. The diameter D of the aperture plus the thickness W of the glass between the apertures is the dimension P occupied by each aperture. The length of the aperture along the normal direction is L, which is generally several hundred μm to several mm. The specific size of all the above parameters can be determined by the user, or...

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Abstract

The invention discloses a thermal neutron detector and a manufacturing method thereof. The thermal neutron detector comprises a microchannel plate, wherein the microchannel plate comprises a plurality of glass tubes forming a microchannel, and a film layer containing thermal neutron absorbing material is coated on the inner wall of the microchannel. Higher detecting efficiency, favorable spatial resolution and better thermal neutron / gamma suppression ratio can be realized through coating the film layer containing the thermal neutron absorbing material on the inner wall of the microchannel by using a mature film coating technology without changing the glass components of the glass tubes of the microchannel plate, therefore, the preparation process of the microchannel plate can not be influenced, and the common microchannel plate capable of being obtained commercially can be utilized.

Description

technical field [0001] The present invention relates generally to thermal neutron detectors, and more particularly to microchannel plate thermal neutron detectors and methods of making the same. Background technique [0002] Microchannel Plate (MicroChannel Plate) is a plate-shaped structure composed of millions of glass tubes with a diameter of ~10 μm, a length of several hundred μm to several mm, and a wall thickness of several μm. Microchannel plates have been widely used in night vision devices and X-ray measurements. Because the diameter of the glass tubes that make up the microchannel plate is only on the order of 10 μm, it can achieve very good position resolution. [0003] In the field of thermal neutron measurement, detection efficiency and spatial resolution are two important indicators for evaluating detectors. In recent years, some people have used microchannel plates to measure thermal neutrons. Due to the good spatial resolution of microchannel plates, spatia...

Claims

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Application Information

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IPC IPC(8): G01T3/00C03C17/23
CPCG01T3/00
Inventor 杨祎罡路年华田阳
Owner TSINGHUA UNIV
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