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A photoemission ionization source

A technology of photoelectric emission and ionization source, applied in the direction of ion source/gun, circuit, discharge tube, etc., can solve the problems of low efficiency and complex processing of ionization source, and achieve the effect of simple and convenient production

Active Publication Date: 2018-10-26
SUZHOU WEIMU INTELLIGENT SYST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the defects of complex and inefficient processing of ionization sources based on the photoelectric effect in the prior art

Method used

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  • A photoemission ionization source

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Embodiment 1

[0027] In this embodiment, a photoelectric emission ionization source is provided, including a power supply, the positive pole of the power supply is connected to the first electrode 1; the negative pole of the power supply is connected to the second electrode 2, between the first electrode 1 and the second electrode 2 A channel through which the sample passes is left in the middle, wherein the first electrode is a counter electrode. Described second electrode 2 comprises transparent substrate 22, and this transparent substrate can select glass, and one side of described transparent substrate 22 is provided with graphene layer 21, and described graphene layer 21 and described first electrode 1 Oppositely, on the other side of the transparent substrate 22 is provided an ultraviolet generating device 3 for irradiation.

[0028] In order to ensure that ultraviolet light can pass through the substrate and irradiate on the graphene layer, and can pass through the graphene, the thic...

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Abstract

The invention provides a photoemission ionization source. The positive electrode of a power supply is connected with a first electrode, and the negative electrode of the power supply is connected with a second electrode. A sample passing channel is reserved between the first electrode and the second electrode. The second electrode comprises a transparent substrate. A graphene layer is arranged at one side of the transparent substrate. The graphene layer is arranged to be opposite to the first electrode. An ultraviolet generation device used for irradiation is arranged at the other side of the transparent substrate. The graphene in the scheme has certain photoelectric effect, and the graphene layer is directly coated in processing so that production is quite easy and convenient.

Description

technical field [0001] The invention relates to the field of optoelectronics, in particular to a photoelectric emission ionization source. Background technique [0002] The ion source is a device that ionizes neutral atoms or molecules and extracts an ion beam from it. It is a key device used in various analytical instruments such as mass spectrometers. Gas discharge, collision of electron beam to gas atoms or molecules, charged particle beam sputtering of working material and surface ionization process can all generate ions and be extracted into beams. According to different conditions of use and purposes, various types of ion sources have been developed. [0003] The ionization source commonly used in traditional ion mobility spectrometry is radioactive 63 Ni ionization source, but the safety inspection and special safety measures brought by the radioactive source have brought a lot of trouble to its practical application, no matter in production and user use, it must be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J49/16
CPCH01J49/161
Inventor 李鹏汪小知李灵锋
Owner SUZHOU WEIMU INTELLIGENT SYST CO LTD
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