Penning-trap system enables loss-free transfer of protons between experimental sites
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Penning-trap system enables loss-free transfer of protons between experimental sites

Protons are the basic building blocks of matter. Together with neutrons, they form atomic nuclei. These minute, positively charged particles have an antimatter counterpart, antiprotons. While the latter have a negative charge and a reversed magnetic moment, they are otherwise identical to protons—at least according to the Standard Model of particle physics.