Volume 62, Number 5, June 2003
|Page(s)||691 - 697|
|Section||Atomic and molecular physics|
|Published online||01 May 2003|
Quasi-simultaneous double ionization of helium in super-intense high-frequency laser pulses
Theoretische Quantendynamik, Physikalisches Institut, Universität Freiburg Hermann-Herder-Str. 3, D-79104 Freiburg, Germany
2 Interdisziplinäres Zentrum für wissenschaftliches Rechnen, Universität Heidelberg Im Neuenheimer Feld 368, D-69120 Heidelberg, Germany
Accepted: 9 April 2003
In super-intense laser pulses beyond the tunneling regime, non-sequential double ionization is known to be of little significance, especially due to the laser-induced Lorentz force. We show that, for such intense fields, electron-electron repulsion does still play a crucial role in the case of quasi-instantaneous double ionization with long electron-electron interaction times at short separations. For this purpose the time-dependent quantum dynamics and the angular ionization yields are investigated for a model helium atom beyond the dipole approximation.
PACS: 32.80.Rm – Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states) / 32.80.Fb – Photoionization of atoms and ions / 42.50.Hz – Strong-field excitation of optical transitions in quantum systems; multi-photon processes; dynamic Stark shift
© EDP Sciences, 2003
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.