München 2019 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 10: Laser Plasmas II

P 10.5: Vortrag

Dienstag, 19. März 2019, 15:15–15:30, HS 20

Spectroscopy of Ions Emitted by an Ultra-Short Pulse Laser Plasma — •Jan Riedlinger, Bastian Hagmeister, and Georg Pretzler — Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität Düsseldorf

The interaction of ultrashort high-intensity laser pulses with solids generates high temperature plasmas with extremely transient behaviour, of which many aspects are still not fully understood. An important example is the achieved ionization state which is difficult to predict due to the variety of possible processes on ultra-small temporal and spatial scales. We present here experiments aiming at the determination of the various ion species in a plasma created by focusing ultra-short laser pulses with a peak intensity close to 10¹⁸ W/cm² on a solid target. Particles emitted by this plasma propagate into the whole solid angle and reach kinetic energies of several hundred electron volts. We developed a compact and versatile Thomson parabola spectrometer for this purpose which is also presented here.