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Updated: Jul 14, 2026

Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
Published on: May 3, 2019
Accuracy evaluation of an optical lattice clock with bosonic atoms
Xavier Baillard1, Mathilde Fouché, Rodolphe Le Targat
1LNE-SYRTE, Observatoire de Paris, 61, avenue de l'Observatoire, 75014 Paris, France. xavier.baillard@obspm.fr
Abstract:
We report what we believe to be the first accuracy evaluation of an optical lattice clock based on the S01-->P03 transition of an alkaline earth boson, namely, Sr88 atoms. This transition has been enabled by using a static coupling magnetic field. The clock frequency is determined to be 429228066418009(32)Hz. The isotopic shift between Sr87 and Sr88 is 62188135Hz with fractional uncertainty 5x10(-7). We discuss the necessary conditions to reach a clock accuracy of 10(-17) or less by using this scheme.
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