Driven production of cold antihydrogen and the first measured distribution of antihydrogen 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.89.233401

Journal Article

Driven production of cold antihydrogen and the first measured distribution of antihydrogen 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, 233401 (2002) [10.1103/PhysRevLett.89.233401]

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Please use a persistent id in citations: http://hdl.handle.net/2128/1645 doi:10.1103/PhysRevLett.89.233401

Abstract: Cold antihydrogen is produced when antiprotons are repeatedly driven into collisions with cold positrons within a nested Penning trap. Efficient antihydrogen production takes place during many cycles of positron cooling of antiprotons. A first measurement of a distribution of antihydrogen states is made using a preionizing electric field between separated production and detection regions. Surviving antihydrogen is stripped in an ionization well that captures and stores the freed antiproton for background-free detection.

Keyword(s): antihydrogen: production ; anti-p: confinement ; positron: confinement ; antihydrogen: yield ; electric field: ionization ; anti-p p: annihilation ; experimental results ; CERN Lab