Detection of the rotation of the earth with a superfluid gyrometer

O. Avenel; P. Hakonen; E. Varoquaux

doi:10.1103/PhysRevLett.78.3602

Detection of the rotation of the earth with a superfluid gyrometer

O. Avenel^*, P. Hakonen, E. Varoquaux

^*Corresponding author for this work

Department of Applied Physics

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Abstract

The effect of the rotation of the Earth, Ω_⊕, on a superfluid resonator equipped with a 4.0 cm² rotation pickup loop and with a microaperture is reported. The velocity circulation induced in the loop by the rotation is detected by phase-slippage techniques. The magnitude of Ω_⊕ is measured to better than 1%, and the north direction to ±0.5° for a 10 h observation time. This experiment is the superfluid counterpart of interferometric measurements based on the Sagnac effect.

Original language	English
Pages (from-to)	3602-3605
Number of pages	4
Journal	Physical Review Letters
Volume	78
Issue number	19
DOIs	https://doi.org/10.1103/PhysRevLett.78.3602
Publication status	Published - 1997
MoE publication type	A1 Journal article-refereed

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abstract = "The effect of the rotation of the Earth, Ω⊕, on a superfluid resonator equipped with a 4.0 cm2 rotation pickup loop and with a microaperture is reported. The velocity circulation induced in the loop by the rotation is detected by phase-slippage techniques. The magnitude of Ω⊕ is measured to better than 1\%, and the north direction to ±0.5° for a 10 h observation time. This experiment is the superfluid counterpart of interferometric measurements based on the Sagnac effect.",

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AU - Hakonen, P.

AU - Varoquaux, E.

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Detection of the rotation of the earth with a superfluid gyrometer

Abstract

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