Berlin 2014 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 14: Poster Session - Theory and Modelling

P 14.7: Poster

Dienstag, 18. März 2014, 16:30–18:30, SPA Foyer

"Collisionless absorption, hot electron generation and intensity scaling in relativistic laser plasma interaction — •Tatyana Liseykina¹ and Peter Mulser² — ¹Institut für Physik, Universität Rostock, Germany — ²Institut für Angewandte Physik, Technische Universität Darmstadt, Germany

The essence of collisionless absorption of intense laser beams in solid targets and the generation of fast electrons is described. From one-dimensional particle-in-cell simulations the main absorption mechanism is extracted as a function of intensity in the relativistic domain. Degree of absorption and hot electron production is shown to undergo a minimum which is attributed to the back holding effect of the radiation pressure. The variation of the electron spectrum with intensity is analyzed and scaling laws are presented. A critical comparison with existing modelling and experiments is given.