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Metrology

Metrology

Nuclear clock ticks ever closer

02 Oct 2024 Isabelle Dumé
precisely measuring the energy needed to excite the thorium-229 nucleus, a crucial step towards developing a future nuclear clock
The frequency comb A powerful laser shines into a jet of gas, creating a bright plasma and generating ultraviolet light. This process helps scientists precisely measure the energy needed to excite the thorium-229 nucleus, a crucial step towards developing a future nuclear clock. (Courtesy: Chuankun Zhang/JILA)
Could a new type of clock potentially be more accurate than today’s best optical atomic clocks? Su

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Isabelle Dumé is a contributing editor to Physics World
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