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Antimatter annihilation plots

Antimatter annihilation plots

A130/0069

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Credit

CERN / SCIENCE PHOTO LIBRARY CERN / SCIENCE PHOTO LIBRARY

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Editorial use only. This image may not be used to state or imply endorsement by CERN of any product, activity or service.

Caption

Antimatter annihilation. Coloured computer plot showing evidence for the first large-scale production of antimatter. The yellow/red ring in the plot at left shows where atoms of antihydrogen have annihilated on contact with the walls of the trap used to contain them. Antihydrogen is the antimatter equivalent of a hydrogen atom. It comprises a positron (an antimatter electron) and an antiproton. The antihydrogen was produced by mixing positrons with antiprotons at a very low temperature. At higher temperatures (right), no annihilations are seen on the walls of the trap. This work was done at the CERN laboratories in Geneva, Switzerland.

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