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System and method for controlling humidity in alkali metal gas chamber

A technology of alkali metal gas chamber and control system, applied in humidity control, control/regulation system, non-electric variable control, etc., can solve problems such as low consistency and unstable anti-relaxation coating performance, and achieve improved consistency Effect

Inactive Publication Date: 2020-04-17
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the film-forming process of self-assembled films such as octadecyltrichlorosilane is greatly affected by factors such as environmental humidity, temperature, and concentration, and even the anti-relaxation properties of such alkali metal gas cells produced in the same batch are also relatively different. Therefore, the consistency of the production of the alkali metal gas chamber with the organochlorosilane coating is low, and the performance of the anti-relaxation coating of the alkali metal gas chamber is unstable, so it is necessary to separately target the environmental humidity, temperature, concentration and other factors Study on the effect of anti-relaxation coating properties

Method used

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  • System and method for controlling humidity in alkali metal gas chamber

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Comparison scheme
Effect test

Embodiment 1

[0023] A humidity control system in an alkali metal gas chamber, comprising an inert gas pipeline through which an inert gas source device 1, a gas volume control device 2, a wetting device 3 and a humidity testing device 4 are sequentially connected, the The humidity testing device 4 inputs a set humidity inert gas into the alkali metal gas chamber 5, the inert gas source device 1 is a dry inert gas, and the gas volume control device 2 controls the dry inert gas to enter the wetting device 3, the humidity of the wet inert gas is tested by the humidity testing device 4 after the wetting device 3 wets the dry inert gas, and by adjusting the air intake and / or Or intake rate to obtain the set humidity inert gas.

[0024] When the measured humidity data of the humidity testing device 4 is lower than the humidity data of the set humidity inert gas, adjust the gas volume control device 2 to increase the intake air volume of the dry inert gas, when the humidity testing device 4 detec...

Embodiment 2

[0027] The difference between this embodiment and the above-mentioned embodiment is that the humidity control system in the alkali metal air chamber also includes a drying device 6 arranged between the wetting device 3 and the humidity testing device 4, and the drying device 6 is The humid inert gas whose humidity exceeds the set humidity inert gas is subjected to dry moisture absorption adjustment to obtain the set humidity inert gas.

[0028] When the measured humidity data of the humidity testing device 4 is higher than the humidity data of the set humidity inert gas, then by increasing the drying efficiency of the drying device 6, the humid inert gas flowing through the drying device 6 is adjusted to dry and absorb moisture Obtain the set humidity inert gas.

[0029] Preferably, the dry inert gas is nitrogen or argon. Preferably, the gas volume control device 2 can be a peristaltic pump or a flow meter. Preferably, the wetting device 3 can be a scrubber bottle 31 filled ...

Embodiment 3

[0031] Preferably, the humidity control system in the alkali metal air chamber further includes a humidity control module, the humidity control module includes a humidity data receiving sub-module and an air volume control sub-module, and the humidity data receiving sub-module is used to receive the humidity test Humidity data of the device 4, the gas volume control sub-module controls the gas volume control device 2 according to the humidity data, and then controls the intake air volume and / or intake rate of the dry inert gas entering the wetting device 3, to obtain The set humidity is inert gas.

[0032] Preferably, the humidity control module also includes a time control sub-module, and the time control sub-module starts timing from the time when the standard humidified inert gas enters the upper tailpipe 51 of the alkali metal gas chamber, and the main body 52 of the alkali metal gas chamber After the inside is at least completely wetted by the standard inert gas, the timi...

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Abstract

The invention provides a system and a method for controlling the humidity in an alkali metal gas chamber. The system comprises a humidity control module, and further comprises a gas source device, a gas amount control device, a wetting device, a humidity testing device and an alkali metal gas chamber of an anti-relaxation coating to be plated, which are sequentially connected through a gas pipeline. An inert gas with the set humidity is introduced into the alkali metal gas chamber to be plated with the anti-relaxation coating in advance before the step of plating the alkali metal gas chamber with the anti-relaxation coating, so that the plating environment humidity of the anti-relaxation coating is accurately controlled, the manufacturing consistency of the alkali metal gas chamber is improved, and the influence of the environment humidity on the performance of the anti-relaxation coating is conveniently researched and explored; therefore, the anti-relaxation coating with excellent performance can be formed in the alkali metal gas chamber.

Description

technical field [0001] The invention relates to an alkali metal air chamber anti-relaxation technology, in particular to a humidity control system and method for an alkali metal air chamber used in the process of making an alkali metal air chamber anti-relaxation coating. Background technique [0002] The alkali metal gas cell is a special transparent glass bubble that uses the properties of alkali metal atomic spin for ultra-high sensitivity magnetic field and inertial measurements. With the development of quantum sensing technology, higher requirements are placed on the anti-relaxation properties of alkali metal gas cells. The collision of the polarized alkali metal atoms with the inner wall of the alkali metal gas will cause wall relaxation and affect the polarization lifetime of the alkali metal atoms. At present, the alkali metal gas chamber is usually filled with buffer gas or an anti-relaxation coating is plated on the inner wall of the alkali metal gas chamber to su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D22/00
CPCG05D22/00
Inventor 房建成池浩湉全伟陆吉玺李林韩邦成周斌权尚慧宁
Owner BEIHANG UNIV
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