Evaporative Cooling of Antiprotons to Cryogenic Temperatures
Evaporative Cooling of Antiprotons to Cryogenic Temperatures
We report the application of evaporative cooling to clouds of trapped antiprotons, resulting in plasmas with measured temperature as low as 9 K. We have modeled the evaporation process for charged particles using appropriate rate equations. Good agreement between experiment and theory is observed, permitting prediction of cooling efficiency in …