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Interchannel mixing in the K-shell photoionization of CH4

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Abstract

Rearrangement of the electron shells accompanying inner-shell photoionization of the CH4 molecule is studied theoretically. For this purpose, the K-shell photoionization cross section σ1s (ω) and the respective photoelectron angular distribution (PAD) parameter βe1s(ω) are computed in different approximations using the single center method. It is obtained that a strong mixing of the partial ionization channels in the vicinity of the 1s ionization threshold, caused by the the non-spherical part of the molecular potential, results in a qualitative difference between the electronic rearrangement effects in molecules, as compared to atoms.

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Authors and Affiliations

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

    Nikolay M. Novikovskiy, Dmitriy V. Rezvan & Victor L. Sukhorukov

  2. Rostov State Transport University, 344038, Rostov-on-Don, Russia

    Ivan D. Petrov & Boris M. Lagutin

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

    Philipp V. Demekhin & Victor L. Sukhorukov

Authors
  1. Nikolay M. Novikovskiy
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  2. Dmitriy V. Rezvan
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  3. Ivan D. Petrov
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  4. Boris M. Lagutin
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  5. Philipp V. Demekhin
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  6. Victor L. Sukhorukov
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Additional information

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

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Novikovskiy, N.M., Rezvan, D.V., Petrov, I.D. et al. Interchannel mixing in the K-shell photoionization of CH4. Eur. Phys. J. D 73, 83 (2019). https://doi.org/10.1140/epjd/e2019-90549-6

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  • DOI: https://doi.org/10.1140/epjd/e2019-90549-6

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