Physics

Scientists create powerful muonium beam to test gravity and atoms

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Researchers have successfully generated a high-intensity beam of superthermal muonium (an exotic atom consisting of a positive muon and an electron) with significantly enhanced properties for precision measurements. The beam achieves intensities approximately 100 times higher than previous methods and kinetic energies suitable for laser spectroscopy and gravitational experiments. This advancement was accomplished by optimizing muonium production from a hot tungsten foil using a high-intensity muon beam and employing a novel extraction and acceleration technique.


This development enables more precise tests of fundamental physics, including measurements of the muon's properties, tests of quantum electrodynamics theory, and potentially the first direct measurement of gravity's effect on antimatter (via the positively charged muon). The improved beam intensity will significantly reduce experimental measurement times and increase the precision of fundamental constant determinations.


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Source: Generation of a high-intensity, superthermal muonium beam for gravity and laser spectroscopy experiments