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Cloud of Positronium, an Exotic Matter-Antimatter System, Laser-Cooled for the First Time

Feb 23, 2024/ Comments Off / in Announcement / by

Positronium (Ps), an exotic atom consisting only of an electron and its antimatter particle, the positron, is the lightest known atomic system. The AEgIS collaboration at CERN experimentally demonstrated, for the first time, Ps laser cooling using a particular laser system (alexandrite-based), specifically developed to meet the requirements of cooling: high intensity, large bandwidth and…

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