Aachen PK 2003 – scientific programme
Parts | Days | Selection | Search | Downloads | Help
P: Plasmaphysik
P 2: Heavy Ion Physics
P 2.3: Talk
Monday, March 17, 2003, 16:25–16:45, FO2
3D gridless particle simulation of fast particle transport in Petawatt laser-plasma interactions — •Paul Gibbon — John von Neumann Institute of Computing, Forschungszentrum Jülich GmbH, D-53435 Jülich
Using a new parallel plasma tree-code—PEPC (see related Posters [1,2], these Proceedings), kinetic simulations of fast electron transport and ion acceleration are performed for a variety of target geometries. In particular, spherical targets are used to emulate Coulomb explosions of atomic clusters and compare with a recently developed absorption model [3]; cylindrical columns to model recent experiments by the Imperial College Group at RAL with wire targets [4]. The built-in, controllable collisionality of this method allows far more realistic modelling of particle transport in the cold, dense plasmas typical of contemporary laser-solid interaction experiments than is currently possible with standard PIC simulation.
[1] P. Gibbon, Introducing PEPC—a Parallel Electrostatic Plasma Coulomb-solver, DPG Proceedings, Aachen 2003.
[2] S. Pfalzner, Multiple timestep plasma tree code, DPG Proceedings, Aachen 2003.
[3] F. Greschik, L. Dimou and H.-J. Kull, Laser & Particle Beams 18, 367 (2000).
[4] F. Beg, K. Kruschelnick et al., Private Communication (2002).