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Ionization in a laser-assisted ion-ion collision

O. Novak* and R. Kholodov

A. N. Artemyev

A. Surzhykov

Th. Stöhlker

  • Institute of Applied Physics, National Academy of Sciences of Ukraine, Petropavlivska Street 58, 40000 Sumy, Ukraine

  • Institut für Physik and CINSaT, Universität Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany

  • Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany and Institut fur Mathematische Physik, Technische Universitat Braunschweig, Mendelssohnstraße 3, 38106 Braunschweig, Germany

  • Helmholtz Institute Jena, Fröbelstieg 3, 07743 Jena, Germany; GSI Helmholtzzentrum für Schwerionenforschung, Planckstraße 1, 64291 Darmstadt, Germany; and Institute for Optics and Quantum Electronics, Friedrich Schiller University, Max-Wien-Platz 1, 07743 Jena, Germany

  • *Corresponding author: novak-o-p@ukr.net
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Phys. Rev. A 107, 052815 – Published 31 May, 2023

DOI: https://doi.org/10.1103/PhysRevA.107.052815

Abstract

The ionization of a hydrogenlike heavy ion by the impact of a charged projectile under simultaneous irradiation by a short laser pulse is investigated within the nonperturbative approach, based on numerical solutions of the time-dependent Dirac equation. Emphasis is placed on the question of whether the laser- and impact-ionization channels interfere with each other and how this interference affects the ionization probability. To answer this question we perform detailed calculations for the laser-assisted collisions between hydrogenlike Pb81+ and α particles. The results of the calculations clearly indicate that for the experimentally relevant set of (collision and laser) parameters, the interference contribution can reach 10% and can be easily controlled by varying the laser frequency.

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Phys. Rev. A 107, 052815– Published 31 May, 2023
  • Received 29 March 2023
  • Accepted 19 May 2023
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