Quadrupole mass-spectrometer

A quadrupole mass spectrometer and quadrupole rod technology, applied in the field of quadrupole mass spectrometer, can solve the problems of restricting natural scientific research, being restricted by scientific research, difficult to have original scientific research results, etc., achieving simple structure and circuit, and increasing ionization efficiency. , the effect of convenient processing

A quadrupole mass spectrometer and quadrupole rod technology, applied in the field of quadrupole mass spectrometer, can solve the problems of restricting natural scientific research, being restricted by scientific research, difficult to have original scientific research results, etc., achieving simple structure and circuit, and increasing ionization efficiency. , the effect of convenient processing

CN105869987AInactive Publication Date: 2016-08-17DALIAN JIAOTONG UNIVERSITY
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  • Quadrupole mass-spectrometer
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  • Quadrupole mass-spectrometer

Examples

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Embodiment Construction

[0041] like Figure 1 to Figure 5 A quadrupole mass spectrometer is shown, including: an ion generating mechanism, a quadrupole filter mechanism, an ion detecting mechanism and a supporting connection mechanism;

[0042] It is characterized by:

[0043] The ion generating mechanism includes: reflector grid cage 1, anode grid cage 2, filament 3, focus plate 4, filament power supply rod 26, filament return rod 17, focus plate alignment rod A6, focus plate connecting rod 18, anode alignment rod 16 and the anode connecting rod 9;

[0044] Wherein, both the reflector cage 1 and the anode grid cage 2 are columnar cage structures with single-ended openings;

[0045] The focusing plate 4 is a sheet structure, and one side end surface thereof is fixed on the alumina insulator A6 through screw connection;

[0046] The open end of the cage of the anode grid cage 1 is welded with a sheet structure part;

[0047] The reflector grid cage 1 is placed outside the anode grid cage 2, and th...

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Abstract

The invention discloses a quadrupole mass-spectrometer which comprises an ion generation mechanism, a quadrupole rod filtering mechanism, an ion detection mechanism and a supporting connection mechanism. Gaseous ions are generated in the ion generation mechanism, guided out, accelerated, focused and then emitted into a quadrupole rod. Direct voltage and alternating voltage are overlapped on the quadrupole rod, so that ions with corresponding mass-to-charge ratios penetrate and are detected by a Faraday cup; accordingly, the components and residual amount of gas are obtained; compared with other mass-spectrometers, the structure and circuit of the quadrupole mass-spectrometer is simpler and lower in cost.

Description

technical field [0001] The invention relates to the field of vacuum equipment, in particular to a quadrupole mass spectrometer. Background technique [0002] Mass spectrometry is currently widely used in various disciplines to identify compounds by preparing, separating, and detecting gas phase ions. Mass spectrometry can provide a wealth of structural information in a single analysis, and combining separation techniques with mass spectrometry is a breakthrough in separation science methods. Among many analytical testing methods, mass spectrometry is considered to be a universal method with high specificity and high sensitivity and has been widely used. At present, mass spectrometry technology is used for mass analysis of substances at home and abroad. Mass spectrometers are one of the most promising scientific instruments in today's scientific instruments, and quadrupole mass spectrometers (also known as quadrupole mass spectrometers) are currently the most mature small O...

Claims

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Application Information

Patent Timeline
17 Aug 2016
Publication
CN105869987A
IPC
H01J49/42; H01J49/14
CPC
H01J49/147; H01J49/4225
Inventors
郭方准; 杨云