| Issue |
Europhys. Lett.
Volume 46, Number 1, April I 1999
|
|
|---|---|---|
| Page(s) | 24 - 30 | |
| Section | Atomic, molecular and optical physics | |
| DOI | https://doi.org/10.1209/epl/i1999-00557-x | |
| 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
Received:
11
September
1998
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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