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A: Fachverband Atomphysik

A 9: Poster Session - Atomic Physics I

A 9.15: Poster

Montag, 9. März 2020, 16:00–18:00, Empore Lichthof

Influence of prepulses on pair production in strong oscillating electric fields — •Oliver Mathiak, Selym Villalba-Chavez, and Carsten Müller — Institut für Theoretische Physik I, Heinrich-Heine-Universität Düsseldorf

Production of electron-positron pairs from vacuum in strong electric fields oscillating in time is studied. The fields are assumed to consist of a main pulse of high intensity, which is preceded by a prepulse of much lower intensity. Pair production probabilities in this field configuration are obtained by solving the time-dependent Dirac equation numerically. We show that a range of field parameters exists where the prepulse, despite its relative weakness, can leave visible traces in the momentum spectra of created particles [1].

[1] L. F. Granz, O. Mathiak, S. Villalba-Chavez and C. Müller, Phys. Lett. B 793, 85 (2019)