Alignment-dependent ionization of molecular hydrogen in intense laser fields

Journal Article · Thu Jul 15 04:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.011403· OSTI ID:21440443

Vanne, Yulian V; Saenz, Alejandro ^[1]

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1. AG Moderne Optik, Institut fuer Physik, Humboldt-Universitaet zu Berlin, Newtonstrasse 15, D-12489 Berlin (Germany)

The alignment dependence of the ionization behavior of H{sub 2} exposed to intense ultrashort laser pulses is investigated on the basis of solutions of the full time-dependent Schroedinger equation within the fixed-nuclei and dipole approximation. The total ionization yields as well as the energy-resolved electron spectra have been calculated for a parallel and a perpendicular orientation of the molecular axis with respect to the polarization axis of linear polarized laser pulses. For most, but not all considered laser peak intensities, the parallel aligned molecules are easier to ionize. Furthermore, it is shown that the velocity formulation of the strong-field approximation predicts a simple interference pattern for the ratio of the energy-resolved electron spectra obtained for the two orientations, but this is not confirmed by the full ab initio results.

• OSTI ID: 21440443
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 1 Vol. 82; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
APPROXIMATIONS
CALCULATION METHODS
COLLISIONS
DIFFERENTIAL EQUATIONS
DIPOLES
ELECTROMAGNETIC RADIATION
ELECTRON SPECTRA
ELEMENTS
EQUATIONS
HYDROGEN
INTERFERENCE
IONIZATION
LASER RADIATION
MATHEMATICAL SOLUTIONS
MOLECULE COLLISIONS
MOLECULES
MULTIPOLES
NONMETALS
ORIENTATION
PARTIAL DIFFERENTIAL EQUATIONS
PHOTON COLLISIONS
PHOTON-MOLECULE COLLISIONS
POLARIZATION
PULSES
RADIATIONS
SCHROEDINGER EQUATION
SPECTRA
TIME DEPENDENCE
WAVE EQUATIONS