15 citations · 60 across the 26 of their papers we have counts for
22 papers · 1 filter
A plasma photocathode for spin-polarized electron beams via state-selected hydrogen halide photofragments
Lars Reichwein, Thomas C. Wilson, Dimitris Sofikitis +6
Spin-polarized electron beams are essential tools for probing fundamental symmetries and for the search beyond the Standard Model. While plasma-based accelerators are a promising p…
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…
Efficient Simulation of Electron-Positron Pair Production in Foam Targets in the low χ-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…
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…
Laguerre-Gaussian pulses for spin-polarized ion beam acceleration
Lars Reichwein, Tong-Pu Yu, Alexander Pukhov +1
Polarized particle sources have a plethora of applications, ranging from deep-inelastic scattering to nuclear fusion. One crucial challenge in laser-plasma interaction is maintaini…
Interaction of Laguerre-Gaussian laser pulses with borane targets of different hydrogen-boron ratio
Lars Reichwein, Alexander Pukhov, Markus Büscher
We study the interaction of high-intensity Laguerre Gaussian laser pulses with hydrogen-boron compounds targets using 3D particle-in-cell simulations. The ratio of hydrogen to boro…
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…
Adiabatic sheath model for beam-driven blowout plasma channels
Yulong Liu, Ming Zeng, Lars Reichwein +1
In plasma wakefield accelerators, the structure of the blowout sheath is vital for the blowout radius and the electromagnetic field distribution inside the blowout. Previous theori…
Plasma acceleration of polarized particle beams
Lars Reichwein, Zheng Gong, Chuan Zheng +3
Spin-polarized particle beams are of interest for applications like deep-inelastic scattering, e.g. to gain further understanding of the proton's nuclear structure. With the advent…
Stable high-transformer ratio beam-wakefield acceleration in cusp plasma channels
Alexander Pukhov, Lars Reichwein
Wakefield excitation by structured electron bunches in hollow gaps between plasma wedges is studied using three-dimensional particle-in-cell simulations. The main part of the elect…
Preservation of He ion polarization after laser-plasma acceleration
Chuan Zheng, Pavel Fedorets, Ralf Engels +11
The preservation of nuclear spin alignment in plasmas is a prerequisite for important applications, such as energy production through polarized fusion or the acceleration of polari…
Spin-polarized He shock waves from a solid-gas composite target at high laser intensities
Lars Reichwein, Xiaofei Shen, Alexander Pukhov +1
We investigate Collisionless Shock Acceleration of spin-polarized He for laser pulses with normalized vector potentials in the range . The setup utilized in th…
Relativistic Topological Waves from Cherenkov and Doppler Resonances in Self-Magnetized Laser Plasmas
Xiaofei Shen, Lars Reichwein, Alexander Pukhov
Strong magnetic fields at plasma-plasma interfaces can be naturally produced in laser-plasma interactions. Using theoretical analysis and fully three-dimensional particle-in-cell s…
Acceleration of spin-polarized proton beams via two parallel laser pulses
Lars Reichwein, Markus Büscher, Alexander Pukhov
We present a setup for highly polarized proton beams using two parallel propagating laser pulses that have a carrier envelope phase difference of . This mechanism is examined ut…
Spatial profile of accelerated electrons from ponderomotive scattering in hydrogen cluster targets
B. Aurand, L. Reichwein, K. M. Schwind +10
We study the laser-driven acceleration of electrons from overdense hydrogen clusters to energies of up to 13 MeV in laser forward direction and several hundreds of keV in an outer…
Positron acceleration via laser-augmented blowouts in two-column plasma structures
Lars Reichwein, Anton Golovanov, Igor Yu. Kostyukov +1
We propose a setup for positron acceleration consisting of an electron driver and a laser pulse creating a two-fold plasma column structure. The resulting wakefield is capable of a…
Excitation of strongly nonlinear plasma wakefield by electron bunches
A. A. Golovanov, I. Yu. Kostyukov, L. Reichwein +2
We propose a new method for analytical self-consistent description of the excitation of a strongly nonlinear wakefield (a bubble) excited by an electron bunch. This method makes it…
On the robustness of spin polarization for magnetic vortex accelerated proton bunches in density down-ramps
Lars Reichwein, Anna Hützen, Markus Büscher +1
We investigate the effect of density down-ramps on the acceleration of ions via Magnetic Vortex Acceleration (MVA) in a near-critical density gas target by means of particle-in-cel…
Finite-emittance Wigner crystals in the bubble regime
Lars Reichwein, Johannes Thomas, Alexander Pukhov
We study the influence of finite emittance electron bunches in the bubble regime of laser-driven wakefield acceleration onto the microscopic structure of the bunch itself. Using re…
The filamented electron bunch of the bubble regime
Lars Reichwein, Johannes Thomas, Alexander Pukhov
We present a theory for describing the inner structure of the electron bunch in the bubble regime starting from a random distribution of electrons inside the bubble and subsequentl…
2D structures of electron bunches in relativistic plasma cavities
Lars Reichwein, Johannes Thomas, Alexander Pukhov
The spatial structure of an ultra-low emittance electron bunch in a plasma wakefield blowout regime is studied. The full Liénard-Wiechert potentials are considered for mutual inter…