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Departmental Colloquium

Antihydrogen Trapped  
Guest Speaker
Dr. Francis Robicheaux  
Guest Affiliation
Auburn University, Department of Physics  
Guest Affiliation Url  
Phillip Stancil  
Thursday, November 17, 2011 4:00 pm - 5:00 pm  
Auditorium, Physics 202  

Atoms made of a particle and an antiparticle are unstable, usually surviving less than a microsecond. Antihydrogen, the bound state of an antiproton and a positron, is made entirely of antiparticles and is believed to be stable. It is this longevity that holds the promise of precision studies of matter-antimatter symmetry. Low energy (Kelvin scale) antihydrogen has been produced at CERN since 2002. I will describe the experiment which has recently succeeded in trapping antihydrogen in a cryogenic Penning trap for times up to approximately 15 minutes.