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Mesh electrode diamond X-ray measuring device

A technology of mesh electrodes and measuring devices, which is applied in the field of X-ray radiation measurement, can solve the problems of low X-ray measurement, inability to guarantee coaxial output, and difficult calibration, so as to reduce the distortion of measurement signals and facilitate sensitivity calibration and measurement applications , easy to aim effect

Active Publication Date: 2016-08-17
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a mesh electrode diamond X-ray measuring device in order to solve the problems existing in the X-ray radiation measurement that affect low-energy X-ray measurement, cannot guarantee coaxial output, and difficult calibration.

Method used

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  • Mesh electrode diamond X-ray measuring device
  • Mesh electrode diamond X-ray measuring device

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Experimental program
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Effect test

Embodiment 1

[0020] figure 1 It is the structural representation of the mesh electrode diamond X-ray measuring device of the present invention, Figure 2a For the diamond top view in the present invention, Figure 2b It is a bottom view of diamond in the present invention. exist figure 1 , Figure 2a , Figure 2b Among them, the mesh electrode diamond X-ray measuring device of the present invention includes a connecting ring 1, a gasket 2, a diamond 3, an insulating ring 4, a casing 5, an insulating layer 6, and a core needle 7, and the gasket 2 is a ring-shaped metal piece, the diamond 3 is cylindrical. The connection relationship is that one end surface of the diamond 3 is coated with a mesh electrode 8 and the other end surface is coated with a disc electrode 9 . The connecting ring 1 is fixedly socketed on the front end of the casing 5 through threads, and a gasket 2, a diamond 3, an insulating ring 4, an insulating layer 6, a gasket 2, a diamond 3, and an insulating layer are se...

Embodiment 2

[0031] The structure of this embodiment is the same as that of Embodiment 1. The difference is that the material of the gasket 2 is stainless steel, the diamond 3 is CVD diamond with a diameter of 5 mm and a thickness of 0.5 mm, and the disc electrode 9 is gold with a diameter of 4.5 mm and a thickness of 0.5 μm. The end connector of the shell 5 is N-type; the outer diameter of the mesh electrode 8 is 4.5 mm, the diameter of the central mesh is 3.6 mm, the duty ratio of the central mesh is 20%, and the material is 1 μm thick gold.

Embodiment 3

[0033] The structure of this embodiment is the same as that of Embodiment 1, except that the material of the gasket 2 is aluminum; the terminal connector of the shell 5 is BNC type.

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Abstract

The invention provides a mesh electrode diamond X-ray measuring device. The end face of diamond in the measuring device is plated with a mesh electrode and a circular electrode. A connecting ring is fixedly connected to the front end of a shell through a thread in a sleeving mode. A gasket, the diamond, an insulation ring and an insulation layer are sequentially arranged on the central axis in the shell. The gasket, the diamond and the insulation ring are pressed in the shell through the connecting ring. The gasket is connected with the mesh electrode in a pressed mode. The insulation layer is fixedly connected with the shell. A core pin is wrapped in the insulation layer and penetrates through the insulation ring to be connected with the circular electrode. A joint externally connected with a cable is arranged at the tail end of the shell. Through the mesh electrode diamond X-ray measuring device, attenuation of X-rays is reduced, it is guaranteed that the low-energy X-rays can directly irradiate the diamond, and X-ray radiation measurement in the inertial confinement fusion field is realized. A concentric structure is more beneficial for realizing impedance matching of detectors, and measurement signal distortion is reduced. The large-area mesh electrode is more beneficial for sensitivity calibration and measurement application.

Description

technical field [0001] The invention belongs to the field of X-ray radiation measurement, in particular to a mesh electrode diamond X-ray measurement device. Background technique [0002] Most current detection of radiation relies on silicon photodiodes or PIN diodes. The downside of silicon photodiodes is that they respond to visible light and are susceptible to damage from neutron radiation. Another commonly used soft X-ray detector is the vacuum X-ray diode, but the sensitivity of the X-ray diode is very low and varies with the photon energy. Therefore, it is necessary to seek an X-ray detector that does not respond to visible light and responds flatly within the spectrum range. Inertial confinement fusion ignition experiments require detectors to respond quickly, have high sensitivity, and have a certain ability to resist radiation damage. Both natural single crystal and polycrystalline diamond can be used for a variety of radiation detection, including X-ray, gamma r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/24
CPCG01T1/24G01T1/241
Inventor 侯立飞杜华冰车兴森余波杨国洪刘慎业
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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