Gravity measurements below 10-9 g with a transportable absolute quantum gravimeter - Sorbonne Université Access content directly
Journal Articles Scientific Reports Year : 2018

Gravity measurements below 10-9 g with a transportable absolute quantum gravimeter

Vincent Ménoret
Pierre Vermeulen
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  • PersonId : 935454
Nicolas Le Moigne
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  • PersonId : 996771
Bruno Desruelle
  • Function : Author

Abstract

Gravimetry is a well-established technique for the determination of sub-surface mass distribution needed in several fields of geoscience, and various types of gravimeters have been developed over the last 50 years. Among them, quantum gravimeters based on atom interferometry have shown top-level performance in terms of sensitivity, long-term stability and accuracy. Nevertheless, they have remained confined to laboratories due to their complex operation and high sensitivity to the external environment. Here we report on a novel, transportable, quantum gravimeter that can be operated under real world conditions by non-specialists, and measure the absolute gravitational acceleration continuously with a long-term stability below 10 nm.s−2 (1 μGal). It features several technological innovations that allow for high-precision gravity measurements, while keeping the instrument light and small enough for field measurements. The instrument was characterized in detail and its stability was evaluated during a month-long measurement campaign.
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hal-01880167 , version 1 (24-09-2018)

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Vincent Ménoret, Pierre Vermeulen, Nicolas Le Moigne, Sylvain Bonvalot, Philippe Bouyer, et al.. Gravity measurements below 10-9 g with a transportable absolute quantum gravimeter. Scientific Reports, 2018, 8, pp.12300. ⟨10.1038/s41598-018-30608-1⟩. ⟨hal-01880167⟩
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