First laser-controlled antihydrogen production.
Lasers are used for the first time to control the production of antihydrogen (H ). Sequential, resonant charge exchange collisions are involved in a method that is very different than the only other method used so far-producing slow H during positron cooling of antiprotons in a nested Penning trap. Two attractive features are that the laser frequencies determine the H binding energy, and that the production of extremely cold H should be possible in principle-likely close to what is needed for confinement in a trap, as needed for precise laser spectroscopy.
Storry
C H
CH
Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA.
Speck
A
A
Le Sage
D
D
Guise
N
N
Gabrielse
G
G
Grzonka
D
D
Oelert
W
W
Schepers
G
G
Sefzick
T
T
Pittner
H
H
Herrmann
M
M
Walz
J
J
Hänsch
T W
TW
Comeau
D
D
Hessels
E A
EA