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On the Critical Impact of HF Power Drifts for Miniature Helium-Based NMR Gyroscopes

Abstract : Nuclear magnetic resonance (NMR) gyroscopes constitute a promising technology for miniaturizing navigation-class gyroscopes. We analyze here a configuration based on a mixture of helium-3 and helium-4. We show that frequency shifts due to the circulation of coherence between helium atoms in metastable and fundamental states have a large impact on the gyroscope drift. In order to reach navigation-class, the high-frequency source used to ignite the plasma is required to have a long-term power stability better than ppm.
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https://hal-cea.archives-ouvertes.fr/cea-02202432
Contributor : Marianne Leriche <>
Submitted on : Wednesday, July 31, 2019 - 4:34:43 PM
Last modification on : Wednesday, September 16, 2020 - 10:42:52 AM

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Agustin Palacios-Laloy, Jaroslaw Rutkowski, Yann Troadec, Jean-Michel Léger. On the Critical Impact of HF Power Drifts for Miniature Helium-Based NMR Gyroscopes. IEEE Sensors Journal, Institute of Electrical and Electronics Engineers, 2017, 17 (3), pp.657-659. ⟨10.1109/JSEN.2016.2632179⟩. ⟨cea-02202432⟩

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