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IOP Publishing, Metrologia, 5(51), p. L15-L17, 2014

DOI: 10.1088/0026-1394/51/5/l15

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Stability comparison of two absolute gravimeters: optical versus atomic interferometers

Journal article published in 2014 by Pierre Gillot, Olivier Francis, Arnaud Landragin, Franck Pereira Dos Santos ORCID, Sébastien Merlet
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

6 pages ; International audience ; We report the direct comparison between the stabilities of two mobile absolute gravimeters of different technology: the LNE-SYRTE Cold Atom Gravimeter and FG5X#216 of the Université du Luxembourg. These instruments rely on two different principles of operation: atomic and optical interferometry. The comparison took place in the Walferdange Underground Laboratory for Geodynamics in Luxembourg, at the beginning of the last International Comparison of Absolute Gravimeters, ICAG-2013. We analyse a 2h10 duration common measurement, and find that the CAG shows better immunity with respect to changes in the level of vibration noise, as well as a slightly better short term stability.