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  1. 1 2013

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  1. 1 Askeland S.

  2. 1 Førre M.

  3. 1 Simonsen A.

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Two-photon double ionization of helium: investigating the importance of correlation in the final state

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Simonsen A., Askeland S., Førre M.
Open Physics
|
2013
|
vol. 11
|
issue 9
1099-1106
EN
In this paper, we present theoretical results for the process of non-sequential two-photon double ionization of helium at the photon energy 42 eV. Our approach is based on solving the time-dependent Schrödinger equation in a B-spline based numerical framework. Information about the process is obtained by extracting the double-ionized component by means of uncorrelated final states. The total (generalized) cross section for the process is extracted, as well as differential cross sections resolved in electron energies and ejection angles. We focus on the impact the final-state correlation has on the accuracy of the cross sections.
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