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SYLP: Relativistische Laser-Plasma-Physik

SYLP 2: Relativistische Laser-Plasma-Physik 2

SYLP 2.4: Vortrag

Samstag, 5. März 2005, 15:40–16:00, HU Senatssaal

Electric field measurements in dense plasmas using proton imaging — •Toma Toncian¹, P. Antici², P. Audebert², M. Borghesi ³, C. A. Cecchetti³, J. Fuchs², G. Pretzler¹, L. Romagnani ³, and O. Willi¹ — ¹Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1 40225 Düsseldorf, Germany — ²Laboratoire pour l’Utilisation des Lasers Intenses (LULI), Ecole Polytechnique, Palaiseau cedex , France — ³Queens University, Belfast, United Kingdom

Proton imaging is a powerful technique to investigate electric fields in dense laser produced plasmas. During the interaction of a intense laser pulse 10¹⁹ W/cm² with thin metal foil targets a multi MeV proton beam is generated. This diagnostic has been applied to study the rear side proton acceleration process of laser irradiated targets. The experimental results have been compared to the theoretical model of plasma expansion in vacuum. Good agreement has been found.