The influence of transverse motion within an atomic gravimeter
By A. Louchet-Chauvet, T. Farah, Q. Bodart, A. Clairon, A. Landragin, S. Merlet, F. P. D. Santos. 2011
218 citations recorded by the source corpus.
Limits on the long-term stability and accuracy of a second generation cold atom gravimeter are investigated. We demonstrate a measurement protocol based on four interleaved measurement configurations, which allows rejection of most of the systematic effects, but not those related to Coriolis acceleration and wave-front distortions. Both are related to the transverse motion of the atomic cloud. Carrying out measurements with opposite orientations with respect to the Earth's rotation vector direction allows us to separate the effects and correct for the Coriolis shift. Finally, measurements at different atomic temperatures are presented and analyzed. In particular, we show the difficulty of extrapolating these measurements to zero temperature, which is required in order to correct for the bias due to wave-front distortions.
Subfields: Atomic and Molecular Physics, and Optics, Ocean Engineering, Oceanography
View Paper: https://www.semanticscholar.org/paper/dabf20a852a1038b301327d7eef26bad95dedf86
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In Oceanography
Citations in the corpus
- Stability comparison of two absolute gravimeters: optical versus atomic interferometers (2014, background): “This led to develop transportable instruments [6, 7, 8, 9] coming out on participation to International Comparisons of Absolute Gravimeters (ICAG) as the LNE-SYRTE Cold Atom Gravimeter (CAG) does since 2009 [10, 11].”
- Precision atomic gravimeter based on Bragg diffraction (2012, background): “The precision and accuracy of state-of-the-art atomic gravimeters is presently limited by effects such as Coriolis acceleration and wavefront aberrations [6, 39].”
- Quantum test of the Universality of Free Fall using rubidium and potassium (2020, methodology): “[60–65] with the following assumptions for Rb (K): Temperature – 21 μK (28 μK) with a 10 % uncertainty; Initial size – 1 mm (1 mm); π-pulse width – 15 μs (15 μs); Free evolution time – 41 ms (41 ms); Time-of-flight prior to the 1 interferometry pulse – 54.”