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Method for on-orbit calibration of basic parameters of mass spectrometer

A technology for calibrating basic parameters and mass spectrometers, which is applied in the field of on-orbit calibrating the basic parameters of mass spectrometers, and can solve problems such as inability to complete calibrating, in-orbit air leakage of gas cylinders, and increased rocket launch costs, etc.

Active Publication Date: 2021-10-08
INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] There are two disadvantages in the above calibration method. First, there is a risk of air leakage in the gas cylinder. If the gas cylinder leaks, the calibration cannot be completed. In addition, in order to increase the reliability of the instrument, the design of the valve and the gas cylinder is relatively heavy. The mass spectrometer needs a rocket to be sent into a predetermined orbit, which undoubtedly increases the cost of rocket launch

Method used

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Examples

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Embodiment 1

[0046]Add fayalite powder (the weight of fayalite powder is 1.5g and the average particle size is 60 mesh) into the vacuum high-temperature furnace, control the vacuum degree in the furnace below 0.00001Pa, and heat until the fayalite powder melts at 1300°C. Injected in a high temperature furnace chamber under temperature and pressure 4 He, 132 Xe and 129 Mixed gas of Xe, then rapidly cool the furnace chamber temperature (temperature rate is 180°C / min) to form solid fayalite to obtain a standard sample containing standard gas, divide the standard sample into several parts on average, and one part is used for analysis and testing The content of standard samples He and Xe, other samples are used for mass spectrometer calibration of mass axis, resolution and sensitivity.

[0047] Mass axis calibration:

[0048] Take 0.25 g of the prepared standard sample, put it into the thermal control device that comes with the mass spectrometer, heat the thermal control device to 600 degree...

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Abstract

The invention relates to the technical field of calibration of basic parameters of mass spectrometers, and provides a method for on-orbit calibration of basic parameters of mass spectrometers, which comprises the following steps of: heating silicate minerals under a vacuum condition by utilizing the characteristic that the silicate minerals can adsorb gases in the environment in a molten state to obtain molten silicate minerals; placing the sample in a standard gas environment for adsorption, then rapidly cooling to obtain a standard sample, and then pre-installing the standard sample in a thermal control device of a mass spectrometer. After the mass spectrometer enters a predetermined track, when the mass spectrometer needs to be used for material testing, carrying out on-track heating on the standard sample to release the adsorbed standard gas into the mass spectrometer so as to realize calibration of basic parameters of the mass spectrometer. The silicate minerals do not release gas before being heated, so that the risk of gas leakage caused by using a standard gas cylinder is avoided, a valve matched with the gas cylinder is not needed, the weight of the mass spectrometer is reduced, and the rocket launching cost is further reduced.

Description

technical field [0001] The invention relates to the technical field of mass spectrometer basic parameter calibration, in particular to a method for on-orbit calibration of mass spectrometer basic parameters. Background technique [0002] The mass spectrometer is a commonly used scientific analysis instrument in the process of deep space exploration. Before scientific analysis, it is necessary to calibrate the mass axis, resolution, sensitivity and other indicators of the mass spectrometer. The traditional method generally uses a standard gas cylinder. The gas cylinder is connected to the mass spectrometer through two valves, so that the performance parameters of the mass spectrometer can be calibrated. [0003] There are two disadvantages in the above calibration method. First, there is a risk of air leakage in the gas cylinder. If the gas cylinder leaks, the calibration cannot be completed. In addition, in order to increase the reliability of the instrument, the design of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/62
CPCG01N27/62H01J49/0009H01J49/0468H01J49/0422
Inventor 刘子恒李健楠苏菲贺怀宇
Owner INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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