Prospects for making a Bose-Einstein-condensed positronium annihilation gamma ray laser

An annihilation gamma ray laser could be made by a cylinder of high density cold singlet Ps annihilating into a coherent gamma ray burst directed along the axis of the cylinder. Such a laser would have many important uses and prospects seem fair for making a 1J model in the immediate future. Higher intensity lasers that would be useful for controled fusion are envisioned, but involve so many orders of magnitude increase in our ability to produce and control antimatter that no reasonable statement about the possibilities can be made at this time. This paper describes our vision and we briefly report the present status of the experiments.