Milestone for novel atomic clock: X-ray laser shows possible route to substantially increased precision time measurement

An international research team has taken a decisive step toward a new generation of atomic clocks. At the European XFEL X-ray laser, the researchers have created a much more precise pulse generator based on the element scandium, which enables an accuracy of one second in 300 billion years--that is about a thousand times more precise than the current standard atomic clock based on cesium. The team presents its success in the journal Nature.