A device for measuring neutral gas molecules in the atmosphere of a planetary orbit

By designing a measuring device including a spherical thermal balance chamber, a cold cathode electron emission and reflective sub-device, a neutral gas ionization chamber voltage regulator device and an ion focusing and collecting sub-device, the problems of large measurement errors and narrow detection and measurement range in the prior art are solved, and high-precision and large-scale measurement of atmospheric neutral gas molecules in planetary orbit are achieved.

CN114878670BActive Publication Date: 2025-03-25NAT SPACE SCI CENT CAS
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Patent Information

Application Number
CN202110169959.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-02-05
Publication Date
2025-03-25
Estimated Expiration
2041-02-05

AI Technical Summary

Technical Problem

The existing measurement devices for atmospheric neutral gas molecules in planetary orbits have problems such as large measurement errors, narrow detection range, insufficient lower pressure detection limit, low accuracy and limited application range.

Method used

A measurement device including a spherical thermal equilibrium chamber, a cold cathode electron emission and reflective sub-device, a neutral gas ionization chamber voltage regulator device and an ion focusing and collecting sub-device are designed. The continuous change of particle incident direction and the increase of gas impact times are achieved through the thermal equilibrium chamber. The cold cathode electron emission and reflective sub-device and the neutral gas ionization chamber voltage regulator device are used to improve the ionization efficiency of neutral gas molecules and reduce background noise interference.

Benefits of technology

High-precision and large-scale measurement of atmospheric neutral gas molecules in planetary orbits is achieved, background noise interference is reduced, measurement range is expanded, and the lower detection limit is less than 10-10Pa, greatly improving the detection accuracy and range.

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Abstract

The present invention belongs to the technical field of space environment detection equipment, and specifically relates to a device for measuring neutral gas molecules in a planetary orbit atmosphere, comprising: a spherical thermal balance chamber, a cold cathode electron emission and reflection sub-device, a neutral gas ionization chamber voltage regulation sub-device, an ion focusing and collecting sub-device and a shell; the shell is a cylindrical structure with an opening at the top, the spherical thermal balance chamber is arranged at the top of the shell, and the spherical thermal balance chamber is provided with an inlet and an outlet; the inlet is located outside the shell, the outlet is located at the opening opened at the top of the shell, the ion focusing and collecting sub-device is arranged at the bottom of the shell, and the cold cathode electron emission and reflection sub-device and the neutral gas ionization chamber voltage regulation sub-device are arranged above the ion focusing and collecting sub-device.
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