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

A glass-ceramic and gravity measurement technology, applied in measurement devices, gravitational field measurement, geophysical measurement, etc., can solve problems such as hindering the progress of engineering, inconvenient mobile measurement, large size of atomic gravimeter, etc., and achieve miniaturization , The effect of good light transmission and compact structure

Active Publication Date: 2016-06-08
FLIGHT AUTOMATIC CONTROL RES INST
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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.

Method used

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

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Embodiment Construction

[0042] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0043] see figure 1 , the gravimetry device based on the glass-ceramic cavity of the present invention comprises a set of two-dimensional vacuum cavity for generating cooling atomic beams, a set of three-dimensional glass-ceramic cavity for generating cooling atomic groups and gravity and gravity gradient detection regions, and laser system.

[0044] The two-dimensional vacuum chamber includes a two-dimensional glass-ceramic vacuum chamber 1 , a four-way joint 4 , an ion pump 5 , an alkali metal source 6 , a vacuum valve 7 and a differential pump tube 8 . The four openings of the four-way joint 4 are respectively connected with the two-dimensional glass-ceramic vacuum chamber 1 , the ion pump 5 , the alkali metal source 6 and the vacuum valve 7 .

[0045] Both ends of the differential pumping tube 8 are respectively connected to the two-dimensional glass-ce...

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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...

Claims

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Application Information

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IPC IPC(8): G01V7/14
Inventor 李俊刘元正李攀雷兴闻茗萱
Owner FLIGHT AUTOMATIC CONTROL RES INST
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