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Phys. Rev. Lett. 96, 053001 (2006) [4 pages]

Ab initio Calculation of the Double Ionization of Helium in a Few-Cycle Laser Pulse Beyond the One-Dimensional Approximation

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Camilo Ruiz1, Luis Plaja1, Luis Roso1, and Andreas Becker2
1Departamento de Física Aplicada, Universidad de Salamanca, E-37008 Salamanca, Spain
2Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Strasse 38, D-01187 Dresden, Germany

Received 7 October 2005; published 7 February 2006

We present ab initio computations of the ionization of two-electron atoms by short pulses of intense linearly polarized Ti:sapphire laser radiation beyond the one-dimensional approximation. In the model the electron correlation is included in its full dimensionality, while the center-of-mass motion is restricted along the polarization axis. Our results exhibit a rich double ionization quantum dynamics in the direction transversal to the field polarization, which is neglected in the previous models based on the one-dimensional approximation.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.96.053001
DOI:
10.1103/PhysRevLett.96.053001
PACS:
32.80.Rm, 33.80.Rv, 42.50.Hz