Field-displacement space cold-vapour atomic clock

Abstract

A field-moving space cooling atom clock applied to the upper air frequency standard, including an atom capturing cavity with atom source, a vacuum guide tube, a microwave resonant cavity, a magnetic shield, a thermostatic cover, a solenoidal coil, a detecting cavity, a vacuum bump system, a computer, a microwave generator, a laser system and a bracket. The characteristics are: adopt a movable microwave resonant cavity to complete the atom selection and the mutual function of the atom and the microwave. This invention can eliminate the end-to-end phasic error brought by the resonant cavity, simplifies the structure and improve the precision of the cooling atom clock.

Description

technical field [0001] The invention relates to an atomic clock, in particular to a field shifting space cold atomic clock. Background technique [0002] At present, the frequency standard atomic clocks used by countries in the world are still traditional thermal atomic clocks such as hydrogen clocks, cesium clocks, and rubidium clocks. Only a few developed countries such as France and the United States have developed their own space cold atomic clocks. In the space environment, the influence of magnetic field and gravity is almost zero, and it will have a higher accuracy than the ground fountain clock, which is expected to reach 10. -17 order of magnitude. Under the action of gravity, the ground fountain cold atomic clock uses gravity to realize the two interactions between the microwave field and atoms. In the microgravity environment of space, gravity cannot be used to realize it. In order to realize the two interactions between atoms and the microwave field, the space ...

AI Technical Summary

Problems solved by technology

In order to realize the two interactions between atoms and the microwave field, the space cold atomic clocks developed abroad at present use two microwave cavities to achieve the two interactions. The cold atomic groups pass through the two microwave cavities in one direction, so that there is Cavity end-to-end phase difference

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