A method for on-orbit calibration of basic parameters of mass spectrometer

Abstract

The invention relates to the technical field of calibration of basic parameters of mass spectrometers, and provides a method for calibrating the basic parameters of mass spectrometers on orbit, utilizing the characteristic that silicate minerals can absorb gas in the environment in a molten state, and under vacuum conditions, the Silicate minerals are heated to obtain molten silicate minerals; they are placed in a standard gas environment for adsorption, and then rapidly cooled to obtain standard samples, and then the standard samples are pre-installed in the thermal control device of the mass spectrometer. When the mass spectrometer enters the predetermined orbit, when the mass spectrometer needs to be used for substance testing, the standard sample is heated on the orbit to release the adsorbed standard gas into the mass spectrometer to realize the calibration of the basic parameters of the mass spectrometer. Since silicate minerals do not release gas before heating, the risk of air leakage caused by the use of standard gas cylinders is avoided, and the valves associated with the gas cylinders are not required, which reduces the weight of the mass spectrometer, thereby reducing the cost of rocket launches.

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...

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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