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Auger-like correlations in the two-photon above threshold ionization of Ar

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Abstract

The two-photon above-threshold 3p-ionization of argon for the photon energies exceeding the 3p-ionization threshold is studied using the correlation function technique. Generalized two-photon ionization cross sections were calculated taking into account many-electron correlations. The calculations demonstrate that the two-photon ionization of Ar at the 3p4 threshold is almost entirely a collective process. The decisive contribution in the above-threshold two-photon 3p-ionization at the exciting-photon energies corresponding to the 3p→εd giant resonance comes from the Auger-like many-electron correlations of ε′ dε″d − 3pεf type.

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Authors and Affiliations

  1. Rostov State University of Transport Communications, 344038, Rostov-on-Don, Russia

    Boris M. Lagutin & Ivan D. Petrov

  2. Institute of Physics, Southern Federal University, 344090, Rostov-on-Don, Russia

    Nicolay M. Novikovskiy & Victor L. Sukhorukov

  3. Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, 34132, Kassel, Germany

    Victor L. Sukhorukov, Philipp V. Demekhin, André Knie & Arno Ehresmann

Authors
  1. Boris M. Lagutin
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  2. Ivan D. Petrov
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  3. Nicolay M. Novikovskiy
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  4. Victor L. Sukhorukov
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  5. Philipp V. Demekhin
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  6. André Knie
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  7. Arno Ehresmann
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Corresponding author

Correspondence to Boris M. Lagutin.

Additional information

Contribution to the Topical Issue “Many Particle Spectroscopy of Atoms, Molecules, Clusters and Surfaces (2018)”, edited by Károly Tökési, Béla Paripás, Gábor Pszota, and Andrey V. Solov’yov.

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Lagutin, B.M., Petrov, I.D., Novikovskiy, N.M. et al. Auger-like correlations in the two-photon above threshold ionization of Ar. Eur. Phys. J. D 73, 103 (2019). https://doi.org/10.1140/epjd/e2019-90615-1

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  • DOI: https://doi.org/10.1140/epjd/e2019-90615-1

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