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Multielement composite hollow cathode lamp

A technology of hollow cathode lamps and hollow cathodes, which is applied to the parts of gas discharge lamps, etc., to achieve the effects of improving measurement accuracy, convenient operation, and simple structure

Inactive Publication Date: 2013-09-11
BEIJING PURKINJE GENERAL INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the defects of the existing hollow cathode lamps, and provide a multi-element composite hollow cathode lamp which can not only measure different elements at the same time, but also has simple structure and convenient operation.

Method used

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Embodiment Construction

[0022] Specific embodiments of the present invention will be described in detail below. It should be noted that the embodiments described here are for illustration only, and are not intended to limit the present invention.

[0023] Such as figure 1 and figure 2 As shown, the multi-element composite hollow cathode lamp of the present invention comprises: a lamp holder 2, a lamp housing 1 installed on the lamp holder 2, a hollow cathode 3 and an anode 4 installed in the lamp housing 1, and two layers of mica sheets parallel to each other 5.

[0024] The lamp housing 1 is made of transparent material, such as quartz glass, etc., and its shape can be columnar and so on.

[0025] The hollow cathode 3 is connected to the power supply line through a cathode binding post 30 , and the anode 4 is connected to the power supply line through two anode binding posts 40 , and each binding post also plays the role of installing and supporting the hollow cathode 3 and anode 4 .

[0026] T...

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Abstract

The invention provides a multielement composite hollow cathode lamp which comprises a lamp base, a lamp shell, a hollow cathode and a hollow anode, wherein the cathode and the anode are installed in the lamp shell. The cathode and the anode are installed on the same center line, the cathode comprises a cathode bushing, a first cathode layer, a second cathode layer and a third cathode layer, the first cathode layer, the second cathode layer and the third cathode layer are made of different materials, the cathode bushing is provided with a cavity with an open end, the open end faces towards the anode, the three cathode layers are embedded in the cavity of the cathode bushing, a hole is formed in the center of the hollow cathode, and the hole penetrates through the third cathode layer and the second cathode layer and stretches to a position which is 1 / 4-1 / 2 of the first cathode layer. The multielement composite hollow cathode lamp can achieve the fact that different elements can be measured at the same time without rotation in a measurement process, and operation is very convenient. According to the multielement composite hollow cathode lamp, the three cathode layers are integrated in the cathode bushing, so the structure is simple; concentricity of the cathode and the anode is easily guaranteed, and improvement of measurement precision is facilitated.

Description

technical field [0001] The invention relates to a multi-element composite hollow cathode lamp used for optical instruments such as multi-channel atomic absorption spectrum analysis. Background technique [0002] Hollow cathode lamp (HCL) is a special form of low-voltage glow discharge light source. The traditional hollow cathode lamp structure includes a lamp holder, a lamp housing installed on the lamp holder, and a hollow cathode and an anode installed in the lamp housing through two layers of mica sheets parallel to each other. The hollow cathode and anode are respectively connected to the lamp holder through a terminal post The power supply line connection inside. The cathode is a cylindrical hollow structure, the discharge is concentrated in the cathode cavity, the metal atoms on the surface of the cathode are bombarded and sputtered, and the sputtered metal atoms are excited by the impact of high-speed electrons and ion currents in the cathode area, thereby radiating ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J61/09
Inventor 刘德国陆玉坡郭满霞
Owner BEIJING PURKINJE GENERAL INSTR
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