Trapped Antihydrogen in Its Ground State

Collaboration
Jan 12, 2012
4 pages
Published in:
  • Phys.Rev.Lett. 108 (2012) 11, 113002
  • Published: Mar 16, 2012
e-Print:
Experiments:

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Abstract:
Antihydrogen atoms ( H ) are confined in an Ioffe trap for 15–1000 s—long enough to ensure that they reach their ground state. Though reproducibility challenges remain in making large numbers of cold antiprotons ( p ) and positrons ( e þ ) interact, 5 1 simultaneously confined ground-state atoms are produced and observed on average, substantially more than previously reported. Increases in the number of simultaneously trapped H are critical if laser cooling of trapped H is to be demonstrated and spectroscopic studies at interesting levels of precision are to be carried out.
  • 37.10.De
  • 36.10.-k
  • 41.20.-q
  • 41.90.+e
  • antihydrogen: ground state
  • antihydrogen: confinement