Laser excites antimatter atoms for first time
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Laser excites antimatter atoms for first time

Antihydrogen acts like normal hydrogen when bathed in light.

Electrodes (gold) for the ALPHA penning trap being inserted into the vacuum chamber and cryostat assembly. This is the trap used to combine or 'mix' positrons and antiprotons to make antihydrogen. Credit: Niels Madsen ALPHA / Swansea
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