Konstanz 1998 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
A: Atomphysik
A 6: Stöße II
A 6.6: Vortrag
Montag, 16. März 1998, 17:30–17:45, A703
Ionization of excited hydrogen atoms interacting with a metal surface under the influence of an external electric field — •P. Kürpick1,2,3, U. Thumm3, and U. Wille4 — 1Department of Physics, University of Tennessee, Knoxville, Tennessee — 2Oak Ridge National Laboratory, Oak Ridge, Tennessee — 3J.R. Macdonald Laboratory, Department of Physics, Kansas State University — 4Bereich Theoretische Physik, Hahn-Meitner-Institut Berlin
Ionization probabilities for excited atoms interacting with a metal surface are calculated for the first time within the time-dependent close-coupling approach. In order to simulate current experiments, the effect of a uniform external electric field is taken into account. Adiabatic resonance states determined by means of the self-energy formalism [1] are used as basis states in the time-dependent calculations. The velocity-dependent dynamic couplings acting between the resonance states are found to have a small influence on the total ion production rates for low-velocity Rydberg atoms [2].
[1] P. Kürpick, U. Thumm, U. Wille, Phys. Rev. A, 56, 543 (1997)
[2] P. Kürpick, U. Thumm, U. Wille, Phys. Rev. A, 57, xxx (1998)
Supported by the Deutsche Forschungsgemeinschaft and the DOE.