Mise en Pratique of the New Kelvin Using Doppler Broadening Thermometry with a Direct Link to the Primary Frequency Standards
| Autor: | S. Briaudeau, Anne Amy-Klein, Benoît Darquié, Michel Abgrall, Dang Bao An Tran, Paul-Eric Pottie, Rodolphe Le Targat, Nicolas Cahuzac, Etienne Cantin, Catherine Martin, O. Kozlova, Elias Moufarej, Louis Lecordier, Olivier Lopez, Christophe Daussy, Mathieu Manceau, Anne Cournol |
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| Přispěvatelé: | Laboratoire de Physique des Lasers (LPL), Centre National de la Recherche Scientifique (CNRS)-Université Sorbonne Paris Nord, Systèmes de Référence Temps Espace (SYRTE), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Frequency standard 01 natural sciences law.invention 010309 optics symbols.namesake optical frequency link Optics law 0103 physical sciences International System of Units high-resolution molecular spectroscopy 010306 general physics [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph] new international System of Units business.industry Doppler broadening thermometry Laser Temperature Unit Metrology temperature unit mise en pratique of the kelvin Boltzmann constant symbols [PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph] business Doppler broadening |
| Zdroj: | 2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF) 2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF), Jul 2020, Keystone, United States. pp.1-2, ⟨10.1109/IFCS-ISAF41089.2020.9234846⟩ |
| Popis: | International audience; We aim to demonstrate the first mise en pratique of the kelvin, within the framework of the new International System of Units (SI), with a direct link to the atomic fountains of LNE-SYRTE laboratory, the French time-frequency metrology institute. The Boltzmann constant being fixed in the new SI, the mise en pratique of the kelvin can be cast as a frequency measurement. One method considered, Doppler Broadening thermometry (DBT), originally proposed and initially demonstrated at Laboratoire de Physique des Lasers is being developed by us and others. We report our recent efforts towards implementing DBT with a direct link to the primary frequency standard in the 300-430K range to demonstrate its potential. |
| Databáze: | OpenAIRE |
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