Publications associated with High Energy Density Physics and Inertial Fusion Energy

In-situ determination of dispersion and resolving power in simultaneous multiple-angle XUV spectroscopy

Journal of Instrumentation 6 (2011)

U Zastrau, V Hilbert, CRD Brown, TD Döppner, SL Dziarzhytski, E Förster, H Glenzer, S Göde, G Gregori, M Harmand, DC Hochhaus, T Laarmann, J Lee, KH Meiwes-Broer, PB Neumayer, A Przystawik, P Radcliffe, MF Schulz, S Skruszewicz, F Tavella, J Tiggesbäumker, S Toleikis, TG White

We report on the simultaneous determination of non-linear dispersion functions and resolving power of three flat-field XUV grating spectrometers. A moderate-intense short-pulse infrared laser is focused onto technical aluminum which is commonly present as part of the experimental setup. In the XUV wavelength range of 10-19 nm, the spectrometers are calibrated using Al-Mg plasma emission lines. This cross-calibration is performed in-situ in the very same setup as the actual main experiment. The results are in excellent agreement with ray-tracing simulations. We show that our method allows for precise relative and absolute calibration of three different XUV spectrometers. © 2011 IOP Publishing Ltd and SISSA.

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