Ablation instability experimentally observed on the thin foil metal target surface during its irradiation by terawatt laser

0546209 - ÚFP 2022 RIV FR eng C - Conference Paper (international conference)
Krupka, Michal - Krása, Josef - Singh, Sushil Kumar - Dostál, Jan - Dudžák, Roman - Burian, Tomáš - Kálal, Milan - Pfeifer, Miroslav - Cikhardt, Jakub - Klír, D. - Řezáč, K. - Pisarczyk, T. - Chodukowski, T. - Rusiniak, Z. - Krůs, Miroslav - Juha, L.
Ablation instability experimentally observed on the thin foil metal target surface during its irradiation by terawatt laser.
EPS 2021: 47th European Physical Society Conference on Plasma Physics. Vol. 45A. Mulhouse: European Physical Society, 2021, č. článku P1.2023. ISBN 979-10-96389-13-1.
[47th EPS Conference on Plasma Physics. Virtual Conference (ES), 21.06.2021-25.06.2021]
R&D Projects: GA MŠMT(CZ) LM2015083; GA MŠMT(CZ) LM2018114; GA ČR GA19-02545S; GA ČR(CZ) GA19-24619S
EU Projects: European Commission(XE) 654148 - LASERLAB-EUROPE; European Commission(XE) 633053 - EUROfusion
Institutional support: RVO:61389021
Keywords : terawatt PALS laser beam * thin foil metal target * ablation instability recorded * femptosecond interferometry
OECD category: Optics (including laser optics and quantum optics)
Method of publishing: Open access
http://ocs.ciemat.es/eps2021pap/pdf/P1.2023.pdf

Time evolution of plasma density modulations in case of thin foil metal targets was observed during the irradiation with focused terawatt iodine PALS laser beam. These modulations were simultaneously recorded using femtosecond interferometry in three time frames and x-ray streak camera allowing to determine growth and decay rates of hydrodynamic instabilities. These modulations were observed during the laser-plasma interaction, in particular several hundred picoseconds before its maximum intensity. Hot electron emission characteristics were measured and analyzed using an angular array of electron spectrometers. Weaker emission of hot electrons from the lead plasma was observed in comparison to lower Z materials.
Permanent Link: http://hdl.handle.net/11104/0322775