5 papers · 1 filter
Radiative depolarization of high-energy electron beams in wakefield accelerators
Oliver Mathiak, Lars Reichwein, Alexander Pukhov +2
The preservation of witness beam polarization in wakefield accelerators will be crucial for future collider applications. While extensive theoretical studies on the injection and i…
Pinching injection in wakefields for spin-polarized electron beams
Lars Reichwein, Dimitris Sofikitis, Oliver Mathiak +5
Pinching of the driver beam in plasma wakefield acceleration is generally considered an unwanted effect that needs to be mitigated. Here, we propose that this effect can be utilize…
Electron-positron pair generation using a single kJ-class laser pulse in a foam-reflector setup
Oliver Mathiak, Lars Reichwein, Alexander Pukhov
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…
Efficient Simulation of Electron-Positron Pair Production in Foam Targets in the low Ï-Regime
Oliver Mathiak, Lars Reichwein, Alexander Pukhov
The generation of electron-positron pairs using direct laser-accelerated electrons and a cone-shaped reflector target for the generation of strong electromagnetic fields is investi…
Fast matter-antimatter separation via Weibel-induced plasma filamentation
Oliver Mathiak, Lars Reichwein, Alexander Pukhov
We study the separation of matter and antimatter driven by the growth of the Weibel instability in a matter-antimatter plasma. The plasma under consideration comprises protons and…