Positronium Molecules Created in a Lab

U.S. physicists have, for the first time, created positronium molecules in a laboratory.

The scientists at the University of California-Riverside said each briefly stable molecule is made up of a pair of electrons and a pair of their anti-particles, called positrons.

The research paves the way for studying multi-positronium interactions that might one day help develop fusion power generation, as well as directed energy weapons such as gamma-ray lasers, the scientists said, adding the achievement might also help explain how the observable universe ended up with so much more matter than antimatter.

The research by Professors Allen Mills and David Cassidy and colleagues is to appear in the Sept. 13 issue of the journal Nature.