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science10h ago
Scientists catch antimatter “atom” acting like a wave for the first time
- Researchers observed wave-like interference in positronium beams, showing its quantum nature for the first time.
- The experiment used a highly controlled positronium beam directed at graphene to produce a clear diffraction pattern.
- Positronium, a neutral atom formed by an electron and a positron, behaves as a single quantum object in the beam.
- The researchers produced positronium by creating negatively charged positronium ions and using a timed laser pulse to release an electron.
- Results were published in Nature Communications and are linked to potential future gravity tests with antimatter.
- The study advances the understanding of matter-wave diffraction for equal-mass constituents like positronium.
- This work may enable precision antimatter studies and experiments on how gravity affects antimatter.
- The graphene sheet served as a diffraction target with atom spacing matching positronium wavelengths.
- Positronium beams achieved energies up to 3.3 keV with narrow energy spreads for clearer diffraction.
- The findings reinforce the long-standing wave-particle duality concept in quantum mechanics.
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