Alkali metal air chamber manufacturing method for improving relaxation resistance of coating based on Plasma hydroxylation

Abstract

The invention relates to an alkali metal air chamber manufacturing method for improving the relaxation resistance of a coating based on Plasma hydroxylation. According to the method, a plasma cleaningmachine is adopted for hydroxylating the inner surface of an air chamber; since a tail pipe of the alkali metal air chamber is thin, the operation that a thick cleaning solution needs to be extractedby adopting a capillary glass tube after cleaning through a traditional hydroxylation method is omitted, so that the air chamber is prevented from being pricked during a cleaning solution extractionprocess, and the problems of time waste, effort waste, nonideal consistency and nonideal relaxation resistance during the current air chamber manufacturing process are solved; and meanwhile, more hydroxide radicals can be formed on the glass surface, and no cleaning solution removal and follow-up drying is needed, so that the contact time of the hydroxide radicals and the outside environment is shortened, the hydroxide radical pollution is reduced, more hydroxide radical number can be maintained, a smooth and uniform covering surface is realized during the organochlorosilane reaction process,the surface covering rate on paramagnetic impurities is increased, and the relaxation resistance of the coating is improved. In addition, multiple air chambers can be processed at the same time, so that the consistency and the repeatability in manufacturing the coating are improved.

Description

technical field [0001] The invention relates to the technical field of making alkali metal gas chambers, in particular to a method for manufacturing alkali metal gas chambers based on Plasma hydroxylation to improve the anti-relaxation performance of the coating, which can be applied to the alkali metal gas chambers in atomic clocks and atomic magnetometers Fabrication, in addition, can be applied to magneto-optical traps, quantum storage, and slow-light experiments. Background technique [0002] Taking the atomic magnetometer as an example, the core sensitive device of the atomic magnetometer is the alkali metal gas chamber, and the polarization time of the alkali metal atoms in the gas chamber affects the sensitivity of the atomic magnetometer. The longer the polarization time, the higher the sensitivity, so , it is of great significance to increase the polarization time of alkali metal atoms. The collision between the alkali metal atoms and the walls of the alkali metal ...

AI Technical Summary

Problems solved by technology

The consistency of the gas chambers obtained by the current production method is poor. Even if the gas chambers are produced in the same batch, the performance of different gas chambers varies greatly. The big reason is that the anti-relaxation coating of the alkali metal gas chamber is produced The cleaning steps are more complicated, time-consuming and require a lot of manual operations. Time-consuming will cause the loss of the number of hydroxyl groups, resulting in uneven coating coverage, resulting in poor anti-relaxation effects, and manual operations will cause differences in cleaning effects. Larger, less consistent anti-relaxation effect

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