A car-based portable atom gravimeter and its application in field gravity survey

As a novel instrument for measuring absolute gravity, the atom gravimeter has shown high sensitivity and stability in the past three decades. In this work, we report a car-based portable atom gravimeter whose sensitivity is at the level of 1.9mGal/Hz (1 Gal = 0.01 m/s2) both for lab and outdoor meas...

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Published in:AIP advances 2021-11, Vol.11 (11), p.115223-115223-7
Main Authors: Zhang, Jiong-Yang, Xu, Wen-Jie, Sun, Shi-Da, Shu, Yu-Biao, Luo, Qin, Cheng, Yuan, Hu, Zhong-Kun, Zhou, Min-Kang
Format: Article
Language:English
Subjects:
Density distribution
Gravimeters
Measuring instruments
Mountains
Portability
Sensitivity
Stability
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cited_by cdi_FETCH-LOGICAL-c428t-7692fcbc0d12300c53acaa8b4da7349e250de7d635749ba66895e765c50992373
cites cdi_FETCH-LOGICAL-c428t-7692fcbc0d12300c53acaa8b4da7349e250de7d635749ba66895e765c50992373
container_end_page 115223-7
container_issue 11
container_start_page 115223
container_title AIP advances
container_volume 11
creator Zhang, Jiong-Yang
Xu, Wen-Jie
Sun, Shi-Da
Shu, Yu-Biao
Luo, Qin
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Hu, Zhong-Kun
Zhou, Min-Kang
description As a novel instrument for measuring absolute gravity, the atom gravimeter has shown high sensitivity and stability in the past three decades. In this work, we report a car-based portable atom gravimeter whose sensitivity is at the level of 1.9mGal/Hz (1 Gal = 0.01 m/s2) both for lab and outdoor measurements. Its resolution can reach 30 μGal within an integration time of 10 000 s when located in a quiet place. During four months of gravity observation, there is no drift for the measurement result, showing that this car-based gravimeter has a competitive advantage at long term stability. By using this car-based atom gravimeter in the open air, the field gravity measurements with sub-mGal performance have been demonstrated in the mountain gravity survey. According to the gravity measurement results from our car-based atom gravimeter, the density distribution of this mountain is inverted, which is consistent with the result from the geological exploration.
doi_str_mv 10.1063/5.0068761
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subjects Density distribution
Gravimeters
Measuring instruments
Mountains
Portability
Sensitivity
Stability
title A car-based portable atom gravimeter and its application in field gravity survey
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