SAMOP 2023 – scientific programme

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A: Fachverband Atomphysik

A 2: Collisions, Scattering and Correlation Phenomena

A 2.2: Talk

Monday, March 6, 2023, 11:15–11:30, F107

Radiation-field-driven ionization in laser-assisted slow atomic collisions — •Andreas Jacob, Carsten Müller, and Alexander Voitkiv — Institut für Theoretische Physik I, Heinrich-Heine-Universität Düsseldorf

It is generally assumed that for ionization processes, which occur in slow atomic collisions, the coupling of the colliding system to the quantum radiation field is irrelevant. We show [1], however, that -- contrary to expectations -- such a coupling can strongly influence ionization of a beam of atomic species A slowly traversing a gas of atomic species B excited by a weak laser field. Our results imply furthermore that the Breit interaction can, in fact, dominate over the Coulomb interaction at very low energies.

[1] A. Jacob, C. Müller, and A. B. Voitkiv, arXiv:2208.09812 (2022).