Environmental conditions in near-wall plasmas generated by impact of energetic particle fluxes

0396402 - FZÚ 2014 RIV GB eng J - Journal Article
Renner, Oldřich - Šmíd, Michal - Burian, Tomáš - Juha, Libor - Krása, Josef - Krouský, Eduard - Matulková, Irena - Skála, Jiří - Velyhan, Andriy - Liska, R. - Velechovský, J. - Pisarczyk, T. - Chodukowski, T. - Larroche, O. - Ullschmied, Jiří
Environmental conditions in near-wall plasmas generated by impact of energetic particle fluxes.
High energy density physics. Roč. 9, č. 3 (2013), s. 568-572. ISSN 1574-1818. E-ISSN 1878-0563
R&D Projects: GA ČR GAP205/10/0814
Grant - others:AVČR(CZ) M100101208
Institutional support: RVO:68378271 ; RVO:61389021
Keywords : laser-produced plasma * K-shell spectroscopy * plasma-wall interaction * particle jet formation * ion back-scattering * plasma simulations
Subject RIV: BL - Plasma and Gas Discharge Physics
Impact factor: 1.519, year: 2013

Directional flows of energetic ions produced by laser-exploded foils were used to investigate transient phenomena accompanying the plasma interaction with surfaces of solid targets (walls). In experiments carried out on the iodine laser system PALS, the interaction of the plasma jets with secondary targets was studied via X-ray imaging, optical and high-resolution X-ray spectroscopy. The environmental conditions in near-wall plasmas created at surfaces of plasma-exposed solids, in particular the velocity distribution of impinging and back-scattered ions, were determined via analysis of the observed spatially-resolved spectra of Al Lyα and Heα groups. The validity of the ion velocity gradients derived from the Doppler effect induced shifts and splitting of the spectral lines was supported by theoretical modeling based on a combination of hydrodynamic, atomic and collisional-radiative codes.
Permanent Link: http://hdl.handle.net/11104/0224192