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P: Fachverband Plasmaphysik
P 8: Laser Plasmas I
P 8.1: Hauptvortrag
Dienstag, 1. März 2016, 14:30–15:00, b302
Nanometer-scale characterization of laser-driven plasmas, compression, shocks and phase transitions, by coherent small angle x-ray scattering — •Thomas Kluge1, Melanie Rödel1, Alexander Pelka1, Emma McBride2, Luke Fletcher2, Christian Rödel2, Siegfried Glenzer2, Michael Bussmann1, Ulrich Schramm1, and Thomas Cowan1 — 1Helmholtz-Zentrum Dresden - Rossendorf — 2SLAC National Accelerator Laboratory
Combining ultra-intense short-pulse and high-energy long-pulse lasers, with hard X-ray FELs, such as the Helmholtz International Beamline for Extreme Fields (HIBEF) [1] at European XFEL [2], or MEC at LCLS [3], holds the promise to revolutionize our understanding of many High Energy Density Physics phenomena. Examples include the relativistic electron generation, transport, and bulk plasma response [4], and ionization dynamics and heating [5] in relativistic laser-matter interactions, or the dynamics of laser-driven shocks, quasi-isentropic compression, and the kinetics of phase transitions at high pressure [3,6]. Particulary interesting is Small Angle X-ray Scattering [4] and resonant scattering [5]. Their feasibility in laser-driven matter will be discussed, including recent results from demonstration experiments at MEC. Very sharp density changes from laser-driven compression are observed, having a step width of <10 nm, comparing to a resolution of several hundred nm achieved previously [6] with phase contrast imaging. [1] www.hibef.eu | [2] www.xfel.eu | [3] J. Synchrotron Rad. 22, 520 (2015) | [4] Phys. Plasmas 21, 033110 (2014) | [5] http://arxiv.org/abs/1508.03988 | [6] Sci. Rep. 3, 1633 (2013)