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MO: Fachverband Molekülphysik

MO 18: Poster – Interaction with Strong or Short Laser Pulses (joint session A/MO)

MO 18.1: Poster

Wednesday, March 4, 2026, 17:00–19:00, Philo 1. OG

Bound-free electron-positron pair production in combined Coulomb and constant crossed electromagnetic fields — •Svea Remme, Alexandra Eckey, Selym Villalba-Chavez, Alexander B. Voitkiv, and Carsten Müller — Institut für Theoretische Physik I, Heinrich-Heine-Universität Düsseldorf

Bound-free electron-positron pair production by a highly charged bare ion in the presence of a strong constant crossed electromagnetic field is studied. We apply two different methods to calculate the pair production rate: (i) a quasiclassical tunneling theory and (ii) a strong-field approximation, both equipped with appropriate Coulomb correction factors. The resulting rate is shown to depend nonperturbatively on both the Coulomb field of the ion and the constant crossed field.

Keywords: pair production; strong electromagnetic fields; nonperturbative interaction