Volume 46, Number 1, April I 1999
|Page(s)||24 - 30|
|Section||Atomic, molecular and optical physics|
|Published online||01 September 2002|
Nondispersive two-electron wave packets in the collinear driven helium atom
Max-Planck-Institut für Quantenoptik -
Hans-Kopfermann-Str. 1, D-85748 Garching
Accepted: 26 January 1999
Nondispersive two-electron wave packets are found in the Floquet spectrum of the driven, one-dimensional helium atom. In classical phase space, they are anchored to the principal nonlinear resonance between the collinear frozen planet orbit and the driving field linearly polarized along the orbit. These novel, highly correlated eigenstates of the driven three-body Coulomb problem exhibit lifetimes of the order of periods of the driving field, with strong fluctuations reminiscent of chaos-assisted tunneling.
PACS: 32.80.Rm – Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states) / 31.25.Jf – Electron-correlation calculations for atoms and ions: excited states / 05.45.-a – Nonlinear dynamics and nonlinear dynamical systems
© EDP Sciences, 1999
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