Screening effects in the electron bremsstrahlung from heavy ions

M. E. Groshev, V. A. Zaytsev, V. A. Yerokhin, P.-M. Hillenbrand, Yu. A. Litvinov, and V. M. Shabaev
Phys. Rev. A 105, 052803 – Published 4 May 2022

Abstract

A fully relativistic approach is presented for the calculation of the bremsstrahlung emitted by an electron scattered off an ionic target. The ionic target is described as a combination of a nuclear electrostatic potential and a screening potential induced by the electronic cloud of the ion. The approach allows us to investigate the influence of the target electrons on the properties of the emitted radiation. We calculate the double differential cross section and Stokes parameters of the bremsstrahlung of an electron scattered off uranium ions in different charge states, ranging from bare to neutral uranium. Results on the high-energy endpoint of the electron bremsstrahlung from Li-like uranium ions U89+ are compared to the recent experimental data. For this process, it is found that taking into account the screening effect leads to a change of the cross section on the level of 14%, which can, in principle, be seen in present-day experiments.

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  • Received 8 December 2021
  • Revised 12 April 2022
  • Accepted 19 April 2022

DOI:https://doi.org/10.1103/PhysRevA.105.052803

©2022 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

M. E. Groshev1, V. A. Zaytsev1, V. A. Yerokhin2, P.-M. Hillenbrand3,4, Yu. A. Litvinov3, and V. M. Shabaev1

  • 1Department of Physics, St. Petersburg State University, Universitetskaya Naberezhnaya 7/9, 199034 St. Petersburg, Russia
  • 2Center for Advanced Studies, Peter the Great St. Petersburg Polytechnic University, St. Petersburg 195251, Russia
  • 3GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
  • 4Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany

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Issue

Vol. 105, Iss. 5 — May 2022

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