Microcrystalline-glass-cavity-based gravity measurement apparatus and measurement method

Abstract

The invention, which belongs to the technical field of acceleration measurement, relates to a microcrystalline-glass-cavity-based movable gravity measurement apparatus. The movable gravity measurement apparatus comprises a two-dimensional microcrystalline-glass vacuum cavity, a three-dimensional microcrystalline-glass vacuum cavity, an alkali metal source, and a differential pump tube. The two-dimensional microcrystalline-glass vacuum cavity is connected to one side of a three-dimensional cooling vacuum cavity of the three-dimensional microcrystalline-glass vacuum cavity by the differential pump tube; a suction device is connected to the other side of the three-dimensional cooling vacuum cavity; and the alkali metal source is connected to the two-dimensional microcrystalline-glass vacuum cavity. Besides, the differential pump tube is made of the same microcrystalline-glass material as those of the two cavities. According to the gravity measurement apparatus, the vacuum cavities are constructed by using the microcrystalline-glass materials based on the low-temperature bonding technology, so that the light transmission property is good, the structure is compact, the thermal and magnetic stability and the anti-impact capability are high. The engineering practicability of the high-precision and high-reliability movable gravity measurement apparatus can be realized conveniently.

Description

technical field [0001] The invention belongs to the technical field of acceleration measurement, and relates to a movable gravity measurement device with a miniaturized glass-ceramic cavity. Background technique [0002] The traditional measurement method for the acceleration of gravity is to use a mechanical gravimeter, combined with the use of a vacuum chamber, which can reduce the influence of various resistances on the acceleration of objects, and realize the measurement of the acceleration of gravity. Since 1991, the matter wave interferometer has gradually become the only gravity measurement method that can achieve high resolution except the mechanical gravimeter. [0003] As one of the recently developed advanced matter-wave interferometers, the atomic gravimeter can be used in many research fields due to its high precision, including seismology, geodesy, and tectonic physics. However, due to the complexity of the system structure of atomic cooling, atomic manipulati...

AI Technical Summary

Problems solved by technology

However, due to the complexity of the system structure of atomic cooling, atomic manipulation, and atomic measurement, the volume of the atomic gravimeter is large, which is not convenient for mobile measurement, which affects the environmental adaptability of the atomic gravimeter and hinders its engineering progress.

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