Research in Engineering and Aviation

Antiproton Confinement in a Penning Trap for Antihydrogen

March 2007

Author(s): G. Gabrielse, P. Larochelle, D. Lesage, B. Levitt, W. S. Kolthammer, I. Kuljanishvili, R. McConnel, J. Wrubel, F.M Esser, H. Gluckler, D. Grzonka, G. Hansen, S. Martin, W. Oelert, J. Schillings, M. Schmitt, T. Sefzik, H. Soltner, Z. Zhang, D. Comeau, M.S. George, E. A. Hessels, C.H. Story, M. Weel, A. Speck, F. Nillius, J. Waltz, T.W. Hansch

Journal: Physical Review Letters, 98, 113002, 2007. DOI: 10.1103/PhysRevLett.98.113002


Antiprotons (p̅ ) remain confined in a Penning trap, in sufficient numbers to form antihydrogen (H̅ ) atoms via charge exchange, when the radial field of a quadrupole Ioffe trap is added. This first demonstration with p̅ suggests that quadrupole Ioffe traps can be superimposed upon p̅ and e+ traps to attempt the capture of H̅ atoms as they form, contrary to conclusions of previous analyses.