During the academic semesters the plasma physics department hosts seminars on Tuesday at 2:30 pm.
If you have questions or want to suggest a speaker/topic, please contact Prof. Olga Rosmej or Dr. Paul Neumayer.

Plasmaphysik Seminar

Collective Laser Ion Acceleration by the Use of Mass Limited Near Critical Plasmas at the PHELIX Laser Facility

by Peter Hilz (HI Jena)

Europe/Berlin
KBW Hörsaal (GSI Darmstadt)

KBW Hörsaal

GSI Darmstadt

Description
Laser plasma based acceleration mechanisms are investigated by a rapidly growing scientific community. This talk will present experimental results on proton acceleration obtained at the Phelix laser by the use of mass limited targets. Hereby the Phelix laser was used to irradiate single levitated spheres with sub focus diameter (1µm). The particles were positioned and stabilized into the interaction region by the use of a Paul Trap. Prior to the main pulse the target already expands to near/subcritical densities. The acceleration dynamics in such a system lead to mono energetic proton beams with a mean kinetic energy of 25-30 MeV and a few MeV bandwidth. The experimental results were reproduced in a 3D PIC simulation. The simulation further allowed to identify the underlying processes and indicates possibilities to optimize this process in the near future.