Timing analysis of two-electron photoemission

  title={Timing analysis of two-electron photoemission},
  author={Anatoli S. Kheifets and Igor A Ivanov and Igor Bray},
  journal={Journal of Physics B: Atomic, Molecular and Optical Physics},
We predict a significant delay of two-electron photoemission from the helium atom after absorption of an attosecond XUV pulse. We establish this delay by solving the time-dependent Schrödinger equation and by subsequently tracing the field-free evolution of the two-electron wave packet. This delay can also be related to the energy derivative of the phase of the complex double-photoionization (DPI) amplitude which we evaluate by using the convergent close-coupling method. Our observations… 

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  • Physics
  • 2014
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  • KheifetsBray
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    Physical review. A, Atomic, molecular, and optical physics
  • 1996
We use the convergent close-coupling formalism to calculate the double-to-single-photoionization cross-section ratio in helium for photon energies from threshold up to 400 eV. Our results for the