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Single proton cooled by distant ions – Nature.com
Sympathetic cooling of a trapped proton by ions in a separate trap.
In a paper in Nature, Bohman et al.1 (the BASE Collaboration) report the cooling of a single proton by a cloud of laser-cooled beryllium ions. Remarkably, the ions were separated from the proton by a distance of about 9 centimetres which is too far apart…
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