X-ray spectroscopic study of charge exchange phenomena in plasma-wall interaction

0423432 - FZÚ 2014 RIV FR eng C - Konferenční příspěvek (zahraniční konf.)
Renner, Oldřich - Krouský, Eduard - Šmíd, Michal - Liska, R. - Váchal, P. - Khattak, F.Y. - Dalimier, E. - Oks, E.
X-ray spectroscopic study of charge exchange phenomena in plasma-wall interaction.
IFSA 2011 - 7th International Conference on Inertial Fusion Sciences and Applications. Les Ulis Cedex A: E D P SCIENCES, 2013, s. 14005. EPJ Web of Conferences, vol. 59. ISBN 9782759810772. ISSN 2100-014X.
[International Conference on Inertial Fusion Sciences and Applications /7./ - IFSA 2011. Bordeaux (FR), 12.09.2011-16.09.2011]
Grant CEP: GA ČR GAP205/10/0814; GA MŠMT(CZ) LC528
Institucionální podpora: RVO:68378271
Klíčová slova: laser-produced plasmas * X-ray spectroscopy * plasma jets * charge exchange * plasma smulation
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech

Jets of energetic ions launched at laser-burnt-through foils represent an efficient tool for investigation of plasma interaction with solid surfaces (plasma-wall interaction, PWI) and for description of transient phenomena occurring close to the walls. Highly charged ions approaching the secondary target interpenetrate the near surface layer, collide with the counter-propagating matter and capture a large number of electrons. This results in a creation of atoms in highly excited Rydberg states or hollow ions with multiple inner vacancies; plasma jet and target ions may also undergo charge exchange (CE) processes. We report PWI experiments with Al/Si(PMMA) and Al/C targets irradiated at normal or oblique laser incidence. The distinct dip structures observed in red wings of Al Ly self-emission is interpreted in terms of CE between C and Al in the near-wall zone. The spectroscopic identification of CE phenomena is supported by results of analytical and numerical calculations.
Trvalý link: http://hdl.handle.net/11104/0229526