Ionization and excitation dynamics of H(1s) in short intense laser pulses

J. P. Hansen, J. Lu, L. B. Madsen, and H. M. Nilsen
Phys. Rev. A 64, 033418 – Published 17 August 2001
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Abstract

We present an analysis of the ionization and excitation dynamics of H(1s) when exposed to an ultrashort and intense laser pulse. The studies are based on quantum close-coupling calculations and classical trajectory Monte Carlo simulations. The quantum and classical approaches are compared at three different levels: (i) Total (ii) differential ionization probabilities, and (iii) a direct comparison of the dynamics during the laser pulse from snapshots of the spatial electronic probability density. For short and intense pulses, the results of the two methods are in fair agreement. We show that the direction of ejection of the ionized electron is very asymmetric and strongly sensitive to the initial phase of the electric field.

  • Received 11 April 2001

DOI:https://doi.org/10.1103/PhysRevA.64.033418

©2001 American Physical Society

Authors & Affiliations

J. P. Hansen1,*, J. Lu2, L. B. Madsen3, and H. M. Nilsen4,*

  • 1Foundation for Research and Technology–Hellas, IESL, P.O. Box 1527, Heraklion 71117, Crete, Greece
  • 2Department of Physics, University of Bielefeld, D-33615 Bielefeld, Germany
  • 3Institute of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C, Denmark
  • 4The Queen’s University of Belfast, Belfast BT7 1NN, Northern Ireland

  • *Permanent address: Institute of Physics, University of Bergen, Allégaten 55, N-5007 Bergen, Norway.

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Vol. 64, Iss. 3 — September 2001

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