Structure effects in angle-resolved high-order above-threshold ionization of molecules.

نویسندگان

  • H Kang
  • W Quan
  • Y Wang
  • Z Lin
  • M Wu
  • H Liu
  • X Liu
  • B B Wang
  • H J Liu
  • Y Q Gu
  • X Y Jia
  • J Liu
  • J Chen
  • Y Cheng
چکیده

We present energy-resolved angular distributions of photoelectrons generated in above-threshold ionization (ATI) of nonaligned diatomic molecules N2 and O2 in high-intensity short laser pulses, with emphasis on the most energetic part of the spectra. The angular distribution for photoelectrons with energy of 10U(p) (U(p): ponderomotive energy), i.e., the plateau cutoff in ATI spectra, is found to be broader in O2 than in N2. Resorting to the analyses from both an S-matrix theory and an intuitive semiclassical model, we attribute the observation to the effect of the ground state molecular orbital structure on high-energy electron emission in strong-field molecular ionization.

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عنوان ژورنال:
  • Physical review letters

دوره 104 20  شماره 

صفحات  -

تاریخ انتشار 2010