Hannover 2013 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 43: Poster II
Q 43.40: Poster
Mittwoch, 20. März 2013, 16:00–18:30, Empore Lichthof
Characterization of supersonic gas jets as targets for laser-plasma interaction experiments — •Thomas Gangolf1, Michael Schnell1, Björn Landgraf1,2, and Christian Spielmann1,2 — 1Institut für Optik und Quantenelektronik, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany — 2Helmholtz-Institut Jena, Fröbelstieg 3, 07743 Jena, Germany
For studies of high power laser matter interaction, jets of neutral gases are widely used as targets for ultrashort pulses[1]. For the needs of a given experiment, a specifically tailored neutral gas density can be obtained from a particularly designed nozzle. In this contribution, we present a setup for the characterization of non-axisymmetric gas jet targets. We use a tomographic approach to measure the full 3D density profile and its temporal evolution by performing phase shift measurements with a Mach-Zehnder interferometer [2]. Additionally, we have carried out numerical simulations by solving the Navier-Stokes equations with a commercial computational fluid dynamics code. We have characterized divergent nozzles with different cross-sections. The realized supersonic gas jets have the expected plateau-like density profile. In this contribution we also report on successful laser wakefield acceleration experiments with rectangular shaped nozzles as well as about recent experiments studying the plasma dynamics with non-collinear laser beams in gas jets with elliptic cross-section.
[1] M. Schnell et al., Phys. Rev. Lett. 108, 075001 (2012)
[2] B. Landgraf et al., Rev. Sci. Instrum. 82, 083106 (2011)