Micro-channel plate and preparation method and application thereof

A technology of microchannel plate and prefabricated rod, which is applied in glass manufacturing equipment, manufacturing tools, light-emitting cathode manufacturing, etc., can solve the problem of low pattern noise and achieve uniform gain, low noise, and high signal-to-noise ratio

Pending Publication Date: 2021-12-24
CHINA BUILDING MATERIALS ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the main purpose of the present invention is to provide a microchannel plate and its preparation method and application. The technical problem to be solved is that the gain of the microchannel plate is uniform and the pattern noise is low through the consistent channel structure.

Method used

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  • Micro-channel plate and preparation method and application thereof
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  • Micro-channel plate and preparation method and application thereof

Examples

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preparation example Construction

[0040] The invention provides a kind of preparation method of microchannel plate, comprises the following steps:

[0041] Preform Preparation: The preparation of the microchannel plate consists of two glass materials, the channel region material and the channel wall material. The material of the channel area is borosilicate glass, and the composition and ratio include: SiO 2 , 30.3~36.4mol%; B 2 o 3 , 18.9~20.2mol%; La 2 o 3 , 5.9~6.1mol%; the total content of BaO and CaO is, 33.7~39.4mol%; Al 2 o 3 , 1.6~2.3mol%; TiO 2 , 2.0-2.9 mol%, can be dissolved and removed by acid in the subsequent process to form channels. The channel wall material is lead silicate glass, and the composition and ratio include: SiO 2 , 70.5~74.5mol%; PbO, 12.0~12.5mol%; Bi 2 o 3 , 0~2.0mol%; Na 2 O, K 2 O, Rb 2 O and Cs 2 The total content of O is 5.8~7.7mol%; BaO and MgO, 4.6~6.7mol%; Al 2 o 3 , 1.1~3.0mol%; TiO 2 , 0 to 2.0 mol%. The channel wall material is resistant to acid soluti...

Embodiment 1

[0059] The present embodiment provides a kind of preparation method of microchannel plate, comprises the following steps:

[0060] Preform Preparation: The preparation of the microchannel plate consists of two glass materials, the channel region material and the channel wall material. The material of the channel area is borosilicate glass, the composition and ratio are: SiO 2 , 32.0mol%; B 2 o 3 , 18.9mol%; La 2 o 3 , 5.9mol%; BaO, 24.4mol%; Al 2 o 3 , 2.3mol%; CaO, 13.6mol%; TiO 2 , 2.9mol%, and a softening point of 597°C. The channel wall material is lead silicate glass, and the composition and ratio are SiO 2 , 70.5mol%; PbO, 12.5mol%; Bi 2 o 3 , 1.7mol%; Na 2 O, 4.0mol%; Cs 2 O, 3.7mol%; BaO, 3.4mol%, MgO, 1.2mol%; Al 2 o 3 , 3.0mol%, and a softening point of 493°C. Lead silicate glass is processed into cylindrical tubes; borosilicate glass is processed into cylindrical rods.

[0061] Monofilament drawing: Nest the borosilicate glass prefabricated rod and t...

Embodiment 2

[0074] The present embodiment provides a kind of preparation method of microchannel plate, comprises the following steps:

[0075] Preform Preparation: The preparation of the microchannel plate consists of two glass materials, the channel region material and the channel wall material. The material of the channel area is borosilicate glass, the composition and ratio are: SiO 2 , 36.4mol%; B 2 o 3 , 20.2mol%; La 2 o 3 , 6.1mol%; BaO, 22.1mol%; Al 2 o 3 , 1.6mol%; CaO, 11.6mol%; TiO 2 , 2.0mol%, and a softening point of 614°C. The channel wall material is lead silicate glass, and the composition and ratio are SiO 2 , 74.5mol%; PbO, 12.0mol%; Bi 2 o 3 , 2.0mol%; Na 2 O, 5.3 mol%; K 2 O, 0.5mol%; BaO, 0.8mol%, MgO, 3.8mol%; Al 2 o 3 , 1.1mol%, and a softening point of 522°C. Lead silicate glass is processed into cylindrical tubes; borosilicate glass is processed into cylindrical rods.

[0076] Monofilament drawing: Nest the borosilicate glass prefabricated rod and t...

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Abstract

The invention relates to a micro-channel plate and a preparation method and application thereof. The method comprises the following steps: nesting a borosilicate glass prefabricated rod and a lead silicate glass prefabricated tube, and drawing to obtain multifilament internal monofilaments; drawing the borosilicate glass preform to obtain monofilaments on the outermost layer of the multifilament; arranging and binding the obtained internal monofilament of the multifilament and the outermost monofilament of the multifilament to obtain a multifilament rod; drawing the multifilament rod to obtain multifilaments; immersing the multifilament into a dilute acid solution to dissolve the monofilament on the outermost layer; cleaning the multifilament by using a NaOH solution, deionized water and isopropanol; cutting off the corroded parts at the two ends of the multifilament; cutting off the residual multifilaments at a fixed length, and arranging the multifilaments into a blank plate; and melting and pressing the blank plate, slicing and polishing, dissolving out a channel with acid, reducing and plating an electrode to prepare the micro-channel plate. The micro-channel plate provided by the invention has no fixed pattern noise under working voltage.

Description

technical field [0001] The invention relates to the technical field of photoelectric element manufacturing, in particular to a microchannel plate and its preparation method and application. Background technique [0002] A microchannel plate is a photomultiplier element, which is composed of tens of millions of micron-scale glass channels. Each channel is like a dynode multiplier. The incident electrons hit the inner wall of the channel under the action of an electric field, and continuously excite more Secondary electrons, which play the role of photoelectric signal amplification, are the core components of low-light image intensifiers, photomultipliers, and particle counters. [0003] At present, the preparation of microchannel plates generally adopts the rod tube method and the composite wire method, that is, the glass core rod and the glass tube are melted respectively, the core rod is the material of the channel area, and the glass tube is the material of the channel wal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J9/12H01J43/24C03B37/027
CPCH01J9/125H01J43/246C03B37/027
Inventor 廉姣史小玄刘辉薄铁柱蔡华刘畅王辰李帅奇马婧
Owner CHINA BUILDING MATERIALS ACAD
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