A filling device and method for a cascaded alkali metal gas chamber

Abstract

In the filling device of the cascaded alkali metal gas chamber of the present invention, the alkali metal foam filling sub-pipes are placed side by side, and each alkali metal foam filling sub-pipe passes through the second glass shrinking pipe and the filling main pipe. The pipeline is connected; except for one of the alkali metal foam filling sub-pipelines, the other alkali metal foam filling sub-pipelines are equipped with breakable components at the connection with the filling main pipeline; the alkali metal foam is realized through the breakable components The closed and connected state of the filling sub-pipeline and the filling main pipeline is changed. The initial state is closed; the connecting pipeline is used to further connect all the alkali metal foam filling sub-pipelines, and every two alkali metal foam filling pipes The first glass reducing pipes are arranged between the sub-pipes; the connecting point of the connecting pipe is located between the alkali metal source and the alkali metal filling part in the alkali metal billet filling sub-pipeline; the vacuum system and the inflation system are connected to the main filling pipe . The invention can ensure that the alkali metal gas chambers with different filling parameters can be filled in one vacuum system.

Description

technical field [0001] The invention belongs to the technical field of electric vacuum production of glass, and in particular relates to a filling device and method for cascaded alkali metal gas chambers. Background technique [0002] The rubidium bubble component is the core component of the physics part of the rubidium clock, in which the rubidium bulb provides stable pumping light for the physics part under the action of the excitation circuit, and the rubidium filter bubble and absorber bubble complete the light pumping and ultrafine energy level transition. The isotope rubidium (Rb) in the rubidium bubble 87 , Rb 85 ), buffer gas composition and pressure affect the performance indicators of rubidium atomic clock frequency accuracy, stability, drift rate, life and reliability. Rubidium bubble vacuum filling technology is a key process in the development and production of rubidium clocks. The type and quality of rubidium in the rubidium bubble, buffer gas composition an...

AI Technical Summary

Problems solved by technology

A set of rubidium foam needs preliminary work such as sealing of alkali metal foam, leak detection, vacuum baking and degassing, etc. It takes more than 48 hours of preparation time, and the vacuum filling of alkali metal foam can only be carried out after the preliminary work is completed. The rubidium bubble filling parameters required by the rubidium clock physical part of different design schemes are different, and the vacuum filling conditions are different. A set of devices in the existing technical scheme can only carry out a set of alkali metal bubble blanks in the same state. Vacuum filling requires corresponding preliminary work and filling work, so a series of rubidium bubbles in different states are filled using existing devices that require multiple preliminary work and corresponding filling work. Such a complete filling process, the other long cycle

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