Strong-field electron spectra of rare-gas atoms in the rescattering regime: Enhanced spectral regions and a simulation of the experiment

  • Milošević D
  • Becker W
  • Okunishi M
 et al. 
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Abstract

We report experimental and theoretical laser-induced photoelectron spectra of Ne, Ar, Kr and Xe in the direction of the laser polarization at laser intensities in the region 0.5–3.2×10^{14} W/cm^{2} . For Ar and Xe, spectra at different angles are also presented for the laser intensities of 2.4×10^{14} W/cm^{2} for Ar and 1.3×10^{14} W/cm^{2} for Xe. Resonance-like structures evolve as a function of the laser intensity in the longitudinal spectra, which become suppressed at large angles. The simulations are in the context of the strong-field approximation, which is augmented to account for rescattering and the atom-specific electron–positive-ion scattering potentials, and they include focal averaging as well as saturation. Agreement between the data and these simulations is generally fair, especially for intensities below the saturation regime.

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Authors

  • D. B. Milošević

  • W. Becker

  • M. Okunishi

  • G. Prümper

  • K. Shimada

  • K. Ueda

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