Düsseldorf 2007 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

P: Fachverband Plasmaphysik

P 12: Schwerionen- und lasererzeugte Plasmen

P 12.2: Vortrag

Mittwoch, 21. März 2007, 11:45–12:00, 6F

Ionization front propagation in gaseous targets induced by sub-ten femtosecond laser pulses — •Ralph Jung¹, Monika Omieczynski¹, Toma Toncian¹, Hartmut Ruhl², and Oswald Willi¹ — ¹Heinrich-Heine-Universität Düsseldorf,D-40225 Düsseldorf — ²Ruhr-Universität Bochum,D-44801 Bochum, Germany

Few-cycle laser pulses deliver ideal conditions for the study of highly transient processes on an ultra-short timescale. Here the propagation of the ionization front and the production of the plasma channel generated by a single sub-10-fs laser pulse (Ti:Sapphire, 800 nm, I=1· 10¹⁶ W/cm²) incident on a gaseous target are reported. The onset and subsequent evolution of the plasma channel have been measured with high temporal and spatial resolution using optical probing. It has been seen that the front propagates at the speed of light. Experimental observations were modeled with the 3D-Particle-In-Cell (PIC) Plasma Simulation Code (PSC). The simulation results are in good agreement with the experimental observations and will also be presented.