Antimatter annihilation

Antimatter annihilation

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This image is part of the feature 50 Years Of Cern Physics


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Caption: Antimatter annihilation event. Computer model of an annihilation event caused by a collision between matter and antimatter. This is evidence for the first large-scale production of cold antimatter, in the form of atoms of antihydrogen. These annihilate when they come into contact with normal matter. Two annihilation events occur: the red lines are photons released in opposite directions by the positron; the yellow lines are tracks of particles produced by the anti-proton. The shared origin of the sets shows that the antiproton and positron were bound as an anti-atom of antihydrogen. This work was done in the ATHENA experiment at CERN, in Geneva, Switzerland.

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Keywords: annihilating, annihilation, anti-atom, anti-atoms, antihydrogen, antimatter, antiproton, artwork, athena, cern, cold, detecting, detection, detector, event, events, evidence, experiment, graphic, illustration, mixing, model, nuclear physics, particle, particle physics, photon, positron, producing, production, results, subatomic, track, tracks, trap

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