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

0396402 - FZÚ 2014 RIV GB eng J - Článek v odborném periodiku
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
Grant CEP: GA ČR GAP205/10/0814
Grant ostatní: AVČR(CZ) M100101208
Institucionální podpora: RVO:68378271 ; RVO:61389021
Klíčová slova: laser-produced plasma * K-shell spectroscopy * plasma-wall interaction * particle jet formation * ion back-scattering * plasma simulations
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
Impakt faktor: 1.519, rok: 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.
Trvalý link: http://hdl.handle.net/11104/0224192