Stimulated Mutual Annihilation HOW TO MAKE A GAMMA-RAY LASER WITH POSITRONIUM Twenty years ago, Philip Platzman and Allen Mills, Jr. at Bell Laboratories proposed that a gamma-ray laser could be made from a Bose-Einstein condensate (BEC) of positronium, the simplest atom made of both matter and antimatter (1). That was a year before a BEC of any kind of atom was available in any laboratory. Today, BECs have been made of 13 different elements, four of which are available in laboratories of the Joint Quantum Institute (JQI), and JQI theorists have turned their attention to prospects for a positronium gamma-ray laser. In a study published this week in Physical Review A (3), they report detailed calculations of the dynamics of a positronium BEC. This work is the first to account for effects of collisions between different positronium species. These collisions put important constraints on gamma-ray laser operation. - See more at: jqi.umd.edu/news/stimulated-mutual-annihilation#sthash.41aqohha.dpuf - See more at: jqi.umd.edu/news/stimulated-mutual-annihilation#sthash.41aqohha.dpuf
Posted on: Thu, 15 May 2014 14:00:01 +0000
Recently Viewed Topics
© 2015