Ion collisions and deceleration in laser-produced plasma-jet interaction with walls

0371054 - FZÚ 2012 RIV CZ eng J - Journal Article
Renner, Oldřich - Krouský, Eduard - Liska, R. - Šmíd, M. - Larroche, O. - Dalimier, E.
Ion collisions and deceleration in laser-produced plasma-jet interaction with walls.
Acta Technica CSAV. Roč. 56, - (2011), T165-T174. ISSN 0001-7043
R&D Projects: GA MŠMT(CZ) LC528; GA ČR GAP205/10/0814
Institutional research plan: CEZ:AV0Z10100523
Keywords : laser-produced plasma jets * plasma-wall interaction * plasma diagnostics * X-ray spectroscopy * fluid and kinetic plasma simulation
Subject RIV: BL - Plasma and Gas Discharge Physics

Phenomena accompanying interaction of plasma jets with solid materials were investigated. The jets produced at rear surface of laser-irradiated double-foil Al/Mg targets interacted with the Mg wall preheated by the action of high-energy photons, particle and laser beams. The environmental conditions in the near-wall regions were analyzed using high-resolution X-ray spectroscopy and temporally resolved imaging. The deceleration profiles of the incident Al ions were quantitatively characterized via Doppler shifts of the optically thin J-satellite from the hydrogenic Al resonance spectra. The found velocity oscillations were compared with the plasma models including the 2D arbitrary Lagrangian Eulerian hydrocode PALE and the multifluid code MULTIF. The interlocked experimental and theoretical methods demonstrate a potential of advanced X-ray diagnosis in investigation of the plasma-wall interactions.
Permanent Link: http://hdl.handle.net/11104/0204688