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Antihydrogen Production by Positronium-Antiproton Collisions in an Ion Trap

A method for producing antihydrogen by the p̄ + Ps → H̄ + e- reaction is described. Included are the calculated capture cross sections, and short descriptions of the electrostatic slow positron beam, positronium-formation, and the antiproton ion trap to be used for antihydrogen production. With present available technology, collimated monoenergetic H̄ beams with an energy of a few keV and an intensity in the order of one per second can be produced by this method. Possible enhancements of this rate are discussed.