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Vacuum external regulation apparatus for pitch angle of high-resolution flying time mass spectrum detector

A technology of time-of-flight mass spectrometry and high resolution is applied in the field of external vacuum adjustment devices for the pitch angle of high-resolution time-of-flight mass spectrometry detectors. The effect of reducing the impact

Active Publication Date: 2016-02-03
INST OF CHEM CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing method is to use a vacuum-specific precision motor to adjust the pitch angle of the detector, which has the advantage of little vacuum influence, but also has the disadvantages of complex control system and high cost

Method used

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  • Vacuum external regulation apparatus for pitch angle of high-resolution flying time mass spectrum detector
  • Vacuum external regulation apparatus for pitch angle of high-resolution flying time mass spectrum detector
  • Vacuum external regulation apparatus for pitch angle of high-resolution flying time mass spectrum detector

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0024] Such as Figure 1~3 As shown, the present invention includes a main body flange 1 , a tension spring pressure plate 2 , two adjustment screw rods 3 and a pitch plate 4 . One side of the main body flange 1 is the atmospheric side, and the other side is the vacuum side. On the atmospheric side of the main body flange 1, two sealing differential blocks 5 are tightly connected at an interval of 180°. Each sealing differential block 5 is provided with a penetrating to The sealing hole on the vacuum side of the main body flange 1 is fastened to a threaded screw mating block 7 with a threaded hole at the top of each sealing differential block 5 . The extension spring pressing plate 2 is fastened to the vacuum side of the main body flange 1, and a central hole is set on the extension spring pressing plate 2 (such as Figure 5 As shown), it is used to...

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Abstract

The invention relates to a vacuum external regulation apparatus for a pitch angle of a high-resolution flying time mass spectrum detector. The vacuum external regulation apparatus comprises a body flange, two regulation screw rods and a pitching board; one side of the body flange is an atmosphere side while the other side of the body flange is a vacuum side; two sealing differential blocks are fastened and connected in the atmosphere side of the body flange spaced at a degree of 180 degrees; a sealing hole for penetrating through the vacuum side of the body flange is formed in each sealing differential block; a screw rod matching block with a threaded hole in the centre is fastened and connected in the top of each sealing differential block; the two regulation screw rods are arranged in the sealing holes of one sealing differential block; a threaded rod is arranged at one end of each regulation screw rod while a central threaded hole is formed in the other end of each regulation screw rod; the threaded rods of the regulation screw rods are matched and connected with the threaded hole of the screw rod matching block; one end, with the central threaded hole, of the regulation screw rod extends to the vacuum side of the body flange; the pitching board is supported in the vacuum side of the body flange at intervals through two threaded rods that are matched and connected with the central threaded holes of the regulation screw rods; and the pitching board is fastened and connected with the mass spectrum detector through a plurality of threaded rods.

Description

technical field [0001] The invention relates to a vacuum external adjustment device for a pitch angle of a high-resolution time-of-flight mass spectrometer detector, belonging to the field of mass spectrometry analysis. Background technique [0002] The principle of time-of-flight mass spectrometry is: in a vacuum environment, ions with different mass-to-charge ratios will obtain different flight velocities under the same voltage acceleration, pass through the free flight and ion reflection area, and then reach the ion detector successively to achieve mass resolution. Resolution is one of the core indicators for evaluating the performance of time-of-flight mass spectrometry. The dispersion degree of time-of-flight of ions with the same mass-to-charge ratio reaching the detector surface directly determines the resolution of time-of-flight mass spectrometry. The angle at which the detector is mounted can greatly affect the dispersion of the ion time-of-flight when they arrive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J49/26H01J49/24
Inventor 何圣贵袁震
Owner INST OF CHEM CHINESE ACAD OF SCI
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