Description
Laser Wakefield Acceleration (LWFA) can generate compact relativistic electron beams, but its performance is often limited by uncontrolled self-injection. We present a quasi-3D particle-in-cell study (Smilei) of nanoparticle-assisted injection in helium plasma. We show that nanoparticles act as localized perturbations that trigger earlier injection of background helium electrons, modifying the timing and structure of self-injection. Depending on nanoparticle properties, this leads to tunable injection regimes, from weakly perturbed to over-injected beams. These results demonstrate a pathway toward controlled electron injection, improved beam properties, and future betatron radiation in laser-plasma accelerators.
Primary author
Alfred Mishi
(The Extreme Light Infrastructure, ELI, Beamlines)
Co-authors
Marcel Lamač
(ELI ERIC, ELI Beamlines)
Orsolya Morvai
(Eli Beamlines)
Jaroslav Nejdl
(Extreme Light Infrastructure ERIC)
Uddhab Chaulagain
(ELI Beamlines)
