Erlangen 2022 – wissenschaftliches Programm
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K: Fachverband Kurzzeit- und angewandte Laserphysik
K 2: Poster
K 2.16: Poster
Dienstag, 15. März 2022, 16:30–18:30, P
Enhancement of X-ray generation by ultrashort-pulsed laser-material interaction — •Patrick Markus Rößler, Philip Mosel, Pranitha Sankar, Elisa Appi, Uwe Morgner, and Milutin Kovacev — Institut für Quantenoptik, Cluster of Excellence PhoenixD and Quantum Frontiers, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover
Nowadays a large range of ultrashort-pulsed laser systems are able to reach intensities above 1013 W/cm2 and can easily ignite a plasma on a solid target-sample. The laser-induced plasma can be used as a source of incoherent X-ray radiation [1]. Here, by focusing ultrashort laser-pulses on a rotating metallic cylinder under vacuum conditions, measurements of the photon flux and the spectrum in the range of 2 keV to 20 keV with a calibrated detector Silix lambda are shown [2]. In addition, the interaction between different pulses and heat accumulations effects are able to change the plasma dynamics which can lead to an increase of the generated X-ray photon flux. In the presented work, double pulse and burst-mode like schemes are investigate in order to enhance the X-ray generation and manipulate the spectral emission.
[1] Martín, L., et al. "Improved stability of a compact vacuum-free laser-plasma X-ray source" High Power Laser Science and Engineering, 2020
[2] Mosel, P., et al. "X-ray Dose Rate and Spectral Measurements during Ultrafast Laser Machining Using a Calibrated (High-Sensitivity) Novel X-ray Detector" Materials, 2021