Chinese scientists develop new nuclear clock

Chinese scientists have developed a new nuclear clock that achieves a high level of stability and precision in time measurement. It relies on nuclear transitions within the nucleus of thorium-229, rather than electronic transitions, offering greater accuracy and reduced sensitivity to external influences. The team used a continuous vacuum ultraviolet laser at a wavelength of 148 nanometers and a thorium-229-doped calcium fluoride crystal to build the device, aiming to meet the needs for high-precision time and frequency applications such as space navigation and deep-space exploration. This nuclear clock is expected to set a new standard for time measurement, distinguished by its superior accuracy and stability compared to traditional atomic clocks. It represents an important step forward in the development of precise quantum measurement and offers greater control over nuclear fields.

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