Erlangen 2026 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 24: Laser Plasmas

P 24.2: Vortrag

Freitag, 20. März 2026, 11:15–11:30, KH 01.013

Expansion of Nano Rods under Realistic Laser Contrast in 2D PIC Simulations — •Franziska-Luise Paschke-Brühl^{1, 2} and Thomas Kluge¹ — ¹Helmholtz-Zentrum Dresden-Rossendorf — ²Technische Universität Dresden

We present a computational study investigating the pre-expansion of 10 um long, 100 nm thick Silicon nano rods under realistic laser contrast of a 10^20 W/cm^2, 30fs laser pulse. The 2D particle-in-cell simulations give insight into the expansion of the electron density and thus where the laser is getting reflected. Significant expansion under the relativistic intensities in the leading laser ramp cause the peak intensities to be reflected before reaching the solid rod structure. Based on that, we investigate which conditions allow the propagation of the highest intensities into an intact nano rod structure. This allows a coulomb explosion to happen, accelerating Silicon ions to fuel a fusion reaction.

Keywords: Particle-In-Cell Simulations; Laser Plasma Fusion; Laser Plasma Acceleration