A Rapid Method for Estimating the Lifetime of Atomic Gas Cells

Abstract

The invention is a method for rapidly evaluating the lifetime of an atomic gas chamber. The method first regulates the distribution state of the alkali metal in the atomic gas chamber to achieve a stable and concentrated regional distribution, and uses a glass shell packaged standard sample pair equal to the sample of the atomic gas chamber to be tested. The differential scanning calorimeter is calibrated to ensure accurate measurement of the amount of alkali metal in the gas chamber, and then the gas chamber is accelerated at high temperature T, and the amount of alkali metal in the gas chamber is periodically monitored at intervals of time t1. When the amount of alkali metal decreases linearly, accelerate the aging of the gas chamber at three different temperatures T0, T1, and T2 to obtain the consumption rate of alkali metal at these temperatures, and finally extrapolate from the Arrhenius equation to obtain the gas chamber at the operating temperature. The consumption rate of the alkali metal in the chamber can be used to quickly estimate the lifetime of the atomic gas chamber based on the initial amount of alkali metal. Compared with the traditional method of tracking and testing the amount of alkali metal for several years, this method not only accurately measures the consumption rate of alkali metal but also can complete the evaluation of the lifetime of the atomic gas chamber in a short period of time.

Description

technical field [0001] The invention relates to the field of atomic gas chambers, in particular to a method for rapidly evaluating the lifetime of atomic gas chambers. Background technique [0002] In recent years, atomic gas chambers have made great progress in the design, manufacture, filling and other process research. It is the core component of new precision quantum instruments and has been widely used in military and civilian fields. Quantum instruments for aerospace are non-repairable and replaceable, so their reliability during use is very important, and one of the most critical constraints is the life of the atomic gas chamber. The main reason for the failure of the atomic gas chamber is the consumption of alkali metal atoms. There are two main reasons. One is the chemical reaction between the alkali metal atoms and the impurities in the gas chamber, which belongs to the rapid consumption period, and the other is the physical diffusion of the alkali metal atoms to t...

AI Technical Summary

Problems solved by technology

In public reports, the decay of alkali metals over time is relatively slow. In order to obtain a more accurate consumption model, long-term (7-10 years) tracking measurement of alkali metal content is required. No matter from the perspective of industrial production or scientific research, Long-term follow-up experiments are difficult, costly, and inefficient

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