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Electron-positron pair generation using a single kJ-class laser pulse in a foam-reflector setup

Year: 2025

Type: preprint

Abstract: We investigate the process of creating electron-positron pairs from laser-matter interaction in pre-ionised foam targets using particle-in-cell simulations. A high-intensity laser pulse drives electrons via direct laser acceleration up to a cone-shaped reflector. The high-energy electrons interact with the reflected laser pulse, generating abundant pairs. The effects of the plasma-channel shape on the propagation of the laser pulse and subsequent pair production is studied. The results show that the number of Compton emission and Breit-Wheeler pair creation events is highly sensitive to the diffraction of the laser due to its interaction with the foam.

Source: arXiv (Cornell University)

DOI: 10.1063/5.0317574

Authors: Mathiak, Oliver, Reichwein, Lars, Pukhov, Alexander

Institutions: Heinrich Heine University Düsseldorf, Forschungszentrum Jülich

Language: English

Topic: Laser-Plasma Interactions and Diagnostics

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Shenzhen Technology University, Bundesministerium für Bildung und Forschung, Gauss Centre for Supercomputing

Award: Verbundprojekt 05P2024 (ErUM-FSP T05) - Aufbau von APPA bei FAIR: Numerische und theoretische Untersuchung von 'Super Charge' TNSA und seine Anwendung für die Kernphysik- und Plasmaphysikforschung bei FAIR

OpenAlex ID: W7083075841

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