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P: Plasmaphysik

P 19: Plasma Physics

P 19.4: Talk

Friday, March 21, 2003, 11:30–11:50, FO2

Laser-Plasma Interaction in a Strong External Magnetic Field — •Ralph Jung¹, Thomas Fischer¹, Helmut Kempkens¹, Georg Pretzler¹, Oswald Willi¹, Kay-Uwe Amthor², Laszlo Veisz², Wolfgang Ziegler², and Roland Sauerbrey² — ¹Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf — ²Institut für Optik und Quantenelektronik, Friedrich-Schiller-Universität Jena

The plasma formation and the expansion of the plasma channel produced by the interaction of intense ultrashort laser pulses (I>10¹⁷ W/cm², 100 fs) with gaseous targets have been studied in a strong external magnetic field (8 T). The diagnostics included optical probing with a delayed frequency doubled pulse as well as optical spectroscopy of the backward and forward scattered laser radiation.

First results of the observations with and without the external magnetic field and a preliminary interpretation of the results will be presented.