Strongly magnetized antihydrogen and its field ionization.
Internal orbits of experimentally analyzed antihydrogen (H) atoms depend as much on an external magnetic field as on the Coulomb force. A circular "guiding center atom" model is used to understand their field ionization. This useful model, assumed in the theory of three-body H recombination so far, ignores the important coupling between internal and center-of-mass motion. A conserved pseudomomentum, effective potential, saddle point analysis, and numerical simulation show where the simple model is valid and classify the features of the general case, including "giant dipole states."
Vrinceanu
D
D
ITAMP, Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02138, USA.
Granger
B E
BE
Parrott
R
R
Sadeghpour
H R
HR
Cederbaum
L
L
Mody
A
A
Tan
J
J
Gabrielse
G
G