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  • PhysRevA.95.063408

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Spin-dependent quantum theory of high-order above-threshold ionization

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  • D. Zille
  • D. Seipt
  • M. Möller
  • S. Fritzsche
  • G. G. Paulus
  • D. B. Milošević
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Article number063408
<mark>Journal publication date</mark>12/06/2017
<mark>Journal</mark>Physical review a
Issue number6
Volume95
Publication StatusPublished
<mark>Original language</mark>English

Abstract

The strong-field-approximation theory of high-order above-threshold ionization of atoms is generalized to include the electron spin. The obtained rescattering amplitude consists of a direct and exchange part. On the examples of excited He atoms as well as ${\mathrm{Li}}^{+}$ and ${\mathrm{Be}}^{++}$ ions, it is shown that the interference of these two amplitudes leads to an observable difference between the photoelectron momentum distributions corresponding to different initial spin states: Pronounced minima appear for singlet states, which are absent for triplet states.