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Lifetime of triply charged thorium-229 isomer ion is suitable for nuclear clocks | RIKEN
RIKEN researchers have performed laser spectroscopy of triply charged thorium-229 ions, which are promising for realizing a nuclear clock
State-of-the-art optical atomic clocks keep time with an unimaginable level of accuracy, requiring more than twice the current age of the Universe to deviate by one second. Now, Atsushi Yamaguchi of the RIKEN Quantum Metrology Laboratory and co-workers have achieved that by creating triply charged thorium-229 isomer ions from uranium and then probing them with a laser. Yamaguchi, A., Shigekawa, Y., Haba, H., Kikunaga, H., Shirasaki, K., Wada, M. & Katori, H. Laser spectroscopy of triply charged 229 Th isomer for a nuclear clock.
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