Curved surface film forming method for dynode of electron multiplier

A technology of electron multiplier and film forming method, which is applied in the direction of electron multiplier detailed information, dynode, electrode system manufacturing, etc., to achieve the effect of easy handling

Inactive Publication Date: 2015-02-18
LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the present invention provides a method for forming a film on a curved surface of an electron multiplier dynode, which effectively s

Method used

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  • Curved surface film forming method for dynode of electron multiplier
  • Curved surface film forming method for dynode of electron multiplier

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Embodiment Construction

[0021] Embodiments of the present invention will be described below with reference to the drawings.

[0022] The present invention aims at the problem of coating defects on the curved surface of the electron multiplier dynapole. In order to meet the requirements of the curved surface coating of the dynapole, a brand-new film formation idea is adopted: first, the secondary electron emission is plated on a stainless steel curved inner lining with a certain radian. The functional thin film is then mounted to the electron multiplier dynode. Since the film coating on the curved inner liner can ensure the uniformity of the film coating, the film forming method can meet the film coating requirements of the electron multiplier dynode curved surface substrate.

[0023] The implementation steps of the electron multiplier dynode curved surface film forming method are as follows:

[0024] Step 1. Curved lining processing:

[0025] refer to figure 2 , according to the size and radian o...

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Abstract

The invention discloses a curved surface film forming method for a dynode of an electron multiplier and effectively solves the problems of stability and uniformity in coating of films onto specific curved surfaces of dynodes of electron multipliers. The method includes: processing a curved surface liner with to-be-bent areas at two ends according to the size and radian of a to-be-coated inner surface of a dynode shell of the electron multiplier, wherein one of the to-be-bent areas is reversely folded by 180 degrees towards the outside of the curved surface to form a folded portion, and the other to-be-bent area is cut to form n rectangular toothed fasteners; coating a film onto the curved surface liner; mounting the coated curved surface liner on the inner surface of the dynode shell of the electron multiplier, and fixing with the folded portion and the rectangular toothed fasteners.

Description

technical field [0001] The invention relates to the technical field of preparation technology of an electron multiplier dynode, in particular to a method for forming a film on a curved surface of an electron multiplier dynode. Background technique [0002] The performance of the electron multiplier determines the service life of the atomic clock, and the Dynapolar surface coating is the core technology of the electron multiplier. figure 1 It is a schematic diagram of the structure of the electron multiplier dynode shell. The surface to be coated is a curved inner surface. For the special curved surface of the electron multiplier dynode, coating is directly on the inner surface of the dynode shell, because the dynode shell The design that the two side walls are at right angles to the curved surface will make the coating process inconvenient to implement, resulting in uneven film formation on the inner surface, which directly affects the stability of the electron multiplier. ...

Claims

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Application Information

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IPC IPC(8): H01J9/02C23C14/22
CPCH01J9/02C23C14/22H01J43/06
Inventor 李得天李晨王多书张玲
Owner LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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