Mainz 2022 – scientific programme

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P: Fachverband Plasmaphysik

P 3: Laser Plasmas I

P 3.2: Talk

Monday, March 28, 2022, 14:15–14:30, P-H12

Study of x-ray emission from proton acceleration targets at Draco PW laser facility — •Radka Štefaníková^1,2, Niklas Meckel^1,2, Xiayun Pan^1,2, Michal Šmíd¹, Hans-Peter Schlenvoigt¹, Irene Prencipe¹, Michaela Kozlová^1,3, Lennart Gaus^1,2, Marvin E. P. Umlandt^1,2, Milenko Vescovi^1,2, Marvin Reimold^1,2, Tim Ziegler^1,2, Florian Kroll¹, Stephan Kraft¹, Ulrich Schramm^1,2, Karl Zeil¹, Josefine Metzkes-Ng¹, and Katerina Falk^1,2,3 — ¹Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany — ²Technische Universität Dresden, Dresden, Germany — ³Institute of Physics of the ASCR, Prague, Czech Republic

Laser plasma-based ion accelerators are very promising candidates for many applications. In order to ensure the reliability of such accelerators a comprehensive set of diagnostics is required. X-ray emission spectroscopy allows us to directly measure the plasma conditions of the laser-plasma interaction and also provides information about the hot electron population through the cold K-α emission production.

Here, we present preliminary results from two new x-ray spectrometers used to study interaction regimes relevant for laser-driven ion acceleration at ultra-short pulse PW-class laser facility. We acquired the emission spectra from flat Ti targets for a range of target thicknesses and laser energies. Additionally, artificial laser pre-pulses were added to alter the laser absorption efficiency.