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Ion transport systems and methods

A technology of ion transmission and ion, which is applied in the field of ion transmission system, can solve the problems of affecting transmission performance, high machining precision requirements, complex technology and processing control points, etc., to optimize the focusing effect, eliminate machining accuracy and machining errors Effect

Pending Publication Date: 2022-04-22
HANGZHOU PUYU TECH DEV CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 1. The ion transmission effect of the multipole ion transmission system is not good under rough vacuum
[0009] 2. The ion funnel transmission system does not perform well in ion transmission under high vacuum
[0010] 3. Some commercialized instruments are usually a combination of ion funnel and multipolar ion transmission structure, and the control points for technology and processing are more complicated
[0011] 4. The machining accuracy is high, and the machining error will seriously affect the transmission performance

Method used

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Embodiment 1

[0030] The ion transmission system of Embodiment 1 of the present invention, the ion transmission system includes:

[0031] a vacuum providing device, the vacuum providing device comprising a first vacuum chamber and an air pump;

[0032] The first transmission device, the first transmission device is arranged in the first vacuum chamber, such as Figure 1-2 As shown, the first transmission device includes:

[0033] There are multiple groups of electrodes, each group of electrodes includes a plurality of electrodes that are axisymmetric, and the multiple electrodes surround a circular area. Along the arrangement direction of the multiple groups of electrodes, the diameter of the circular area surrounded by each group of electrodes gradually becomes smaller. The electrodes in the electrode are arranged in sequence along the axial direction;

[0034] A power supply, the power supply is used to apply voltage to multiple electrodes in each set of electrodes, so that the ions acc...

Embodiment 2

[0045] An application example of the ion transmission system and method according to Embodiment 1 of the present invention in mass spectrometry.

[0046] In this application example, the sample components are ionized in the ion source, the generated ions are passed through the first ion transmission device and the second ion transmission device, and then the ions are introduced into the back-end mass analyzer, and after mass screening Arrive at the detector; the ion source works under the condition of atmospheric pressure, which is ESI electrospray ion source or APCI atmospheric pressure chemical ionization source; the mass analyzer and detector work at 1×10 -6 Within the vacuum range below Torr;

[0047]The first ion transmission device is located in the first vacuum chamber, and the pressure in the chamber is within the vacuum range of 1 to 2 Torr. The first ion transmission device includes 16 sets of electrodes arranged in sequence, and each set of electrodes includes 6 pai...

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Abstract

The invention provides an ion transmission system and method, the ion transmission system comprises a power supply and a vacuum supply device, and the vacuum supply device comprises a first vacuum cavity and a sucking pump; the ion transmission system further comprises a first transmission device arranged in the first vacuum cavity, the first transmission device comprises multiple sets of electrodes, each set of electrodes comprises multiple electrodes in axial symmetry, the multiple electrodes define a circular area, the diameter of the circular area defined by the multiple sets of electrodes is gradually decreased in the arrangement direction of the multiple sets of electrodes, and the diameter of the circular area is larger than that of the multiple sets of electrodes. The electrodes in each group of electrodes are sequentially arranged along the axial direction; and the power supply is used for applying voltage to the plurality of electrodes in each group of electrodes, so that ions advance in an area enclosed by each group of electrodes in an accelerated and focused manner. The method has the advantages that the ion focusing effect is good, and electric field deviation caused by machining and assembling errors is eliminated.

Description

technical field [0001] The present invention relates to ions, and more particularly to ion transport systems and methods. Background technique [0002] Mass analyzers and electron multipliers need to be used under high vacuum conditions (10-6Torr) due to their special working principles. The mass spectrometer contains multiple differential vacuum chambers to maintain the vacuum degree. The air pressure of each vacuum chamber gradually decreases, and each other Through small holes or slit junctions for ions to pass through. The ion transmission system is responsible for transmitting the ions from the front-end ion interface to the back-end mass analyzer, so that the ions transition from the atmospheric pressure environment to the high vacuum state. How to transfer the ions through the vacuum and maintain a high ion transmission efficiency and focusing effect, is the ion The goal of continuous development of transmission technology. In the upgrading of mass spectrometer prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J49/24H01J49/06
CPCH01J49/24H01J49/063
Inventor 尹伊君杨继伟雷鑫槐俞晓峰张贺锋黄进黄勇胜陈悠
Owner HANGZHOU PUYU TECH DEV CO LTD
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