Gabrielse G, Larochelle P, Le Sage D, Levitt B, Kolthammer W S, Kuljanishvili I, McConnell R, Wrubel J, Esser F M, Glückler H, Grzonka D, Hansen G, Martin S, Oelert W, Schillings J, Schmitt M, Sefzick T, Soltner H, Zhang Z, Comeau D, George M C, Hessels E A, Storry C H, Weel M, Speck A, Nillius F, Walz J, Hänsch T W
Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA.
Phys Rev Lett. 2007 Mar 16;98(11):113002. doi: 10.1103/PhysRevLett.98.113002. Epub 2007 Mar 14.
Antiprotons (p[over]) remain confined in a Penning trap, in sufficient numbers to form antihydrogen (H[over ) atoms via charge exchange, when the radial field of a quadrupole Ioffe trap is added. This first demonstration with p[over] suggests that quadrupole Ioffe traps can be superimposed upon p[over] and e(+) traps to attempt the capture of H[over] atoms as they form, contrary to conclusions of previous analyses.
