Frequency reproducibility of solid-state thorium-229 nuclear clocks

www.nature.com

Frequency reproducibility of solid-state thorium-229 nuclear clocks

www.nature.com

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NatureEnglish · 25 days ago

Nature, Published online: 28 January 2026; doi:10.1038/s41586-025-09999-5

The nuclear clock transition of 229mTh in 229Th:CaF2 crystals is characterized as a function of doping concentration, temperature and time, demonstrating high reproducibility and identifying ideal operating characteristics of these crystals as nuclear clocks.

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