The European Physical Journal D

, Volume 51, Issue 3, pp 401–407 | Cite as

Effects of the internuclear vector on the photoelectron angular distributions of H2 +

  • X. H. Ren
  • J. T. Zhang
  • Y. Wang
  • Z. Z. Xu
  • D. S. Guo
Ultraintense and Ultrashort Laser Fields Regular Article

Abstract

We study the photoelectron angular distributions (PADs) of diatomic molecule H2 + irradiated by intense laser fields using a nonperturbative scattering theory. We find that the internuclear vector may change the PADs. The PADs have qualitative changes with the increasing of the internuclear distance. The molecular orientation affect the symmetry of the PADs. When the internuclear vector is vertical or parallel to the laser polarization vector, the PADs are four-fold symmetric; for other case the PADs are two-fold symmetric. Due to the modulation effect resulting from the molecular multi-core nature, the size of the jet and the main lobe can be enlarged or reduced. The molecular modulation effect become obvious for large internuclear distance.

PACS

33.80.-b Photon interactions with molecules 33.80.Rv Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states) 42.65.-k Nonlinear optics 

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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • X. H. Ren
    • 1
    • 2
  • J. T. Zhang
    • 1
  • Y. Wang
    • 1
  • Z. Z. Xu
    • 1
  • D. S. Guo
    • 3
  1. 1.State Key Lab. for High-Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of SciencesShanghaiP.R. China
  2. 2.Graduate School of Chinese Academy of ScienceBeijingChina
  3. 3.Department of PhysicsSouthern University and AM collegeBaton RougeUSA

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