Geometrical dependence in photoionization of H-2(+) in high-intensity, high-frequency, ultrashort laser pulses

James McCann, S. Selsto, M. Forre, J.P. Hansen, L.B. Madsen

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22 Citations (Scopus)

Abstract

The ionization dynamics of H2 + exposed to high-intensity, high-frequency, ultrashort laser pulses is investigated with two theoretical approaches. The time-dependent Schrödinger equation is solved by a direct numerical method, and a simple two-center interference-diffraction model is studied. The energy and angular distributions of the photoelectron for various internuclear distances and relative orientations between the internuclear axis of the molecule and the polarization of the field are calculated. The main features of the photoelectron spectrum pattern are described well by the interference-diffraction model, and excellent quantitative agreement between the two methods is found. The effect of quantal vibration on the photoelectron spectrum is also calculated. We find that vibrational average produces some broadening of the main features, but that the patterns remain clearly distinguishable.
Original languageEnglish
Article number033407
Pages (from-to)033407-1-033407-8
Number of pages8
JournalPhysical Review A
Volume73
Issue number3
DOIs
Publication statusPublished - Mar 2006

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy(all)

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    McCann, J., Selsto, S., Forre, M., Hansen, J. P., & Madsen, L. B. (2006). Geometrical dependence in photoionization of H-2(+) in high-intensity, high-frequency, ultrashort laser pulses. Physical Review A, 73(3), 033407-1-033407-8. [033407]. https://doi.org/10.1103/PhysRevA.73.033407