GoKawiilNorthwestern physicists isolate single positron in quantum cyclotron for precision tests
A Northwestern University team led by Gerald Gabrielse has trapped and cooled a single positron, the antimatter counterpart of the electron, to its lowest energy state using a one-positron quantum cyclotron. The setup, described in Physical Review Letters on October 21, is designed to measure the particle's magnetic properties with extreme precision, allowing comparison with equivalent electron measurements.