Background-free observation of cold antihydrogen and a field-ionization analysis of its states

Gabrielse, G.; Speck, A.; Tan, J. N.; Wessels, M.; Grzonka, D.; Sefzick, N. Y.; Hessels, E. A.; Bowden, N. S.; Oelert, W.; Schepers, G.; Storry, C. H.; Walz, J.; Haensch, T. W.; Oxley, P.; Pittner, H.

doi:10.1103/PhysRevLett.89.213401

Journal Article

Background-free observation of cold antihydrogen and a field-ionization analysis of its states

Gabrielse, G. ; Bowden, N. S. ; Oxley, P. ; Speck, A. ; Storry, C. H. ; Tan, J. N. ; Wessels, M. ; Grzonka, D.FZJ* ; Oelert, W.FZJ* ; Schepers, G.FZJ* ; Sefzick, N. Y.FZJ* ; Walz, J. ; Pittner, H. ; Haensch, T. W. ; Hessels, E. A.

2002
APS College Park, Md.

Physical review letters 89, 213401 (2002) [10.1103/PhysRevLett.89.213401]

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Please use a persistent id in citations: http://hdl.handle.net/2128/1644 doi:10.1103/PhysRevLett.89.213401

Abstract: A background-free observation of cold antihydrogen atoms is made using field ionization followed by antiproton storage, a detection method that provides the first experimental information about antihydrogen atomic states. More antihydrogen atoms can be field ionized in an hour than all the antimatter atoms that have been previously reported, and the production rate per incident high energy antiproton is higher than ever observed. The high rate and the high Rydberg states suggest that the antihydrogen is formed via three-body recombination.

Keyword(s): J

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