| Issue |
EPJ Web of Conferences
Volume 59, 2013
IFSA 2011 – Seventh International Conference on Inertial Fusion Sciences and Applications
|
|
|---|---|---|
| Article Number | 14005 | |
| Number of page(s) | 5 | |
| Section | HIGH ENERGY DENSITY PHYSICS & APPLICATIONS – XIV. Hot Dense Plasma Atomic Processes | |
| DOI | https://doi.org/10.1051/epjconf/20135914005 | |
| Published online | 15 November 2013 | |
https://doi.org/10.1051/epjconf/20135914005
X-ray spectroscopic study of charge exchange phenomena in plasma-wall interaction
1 Institute of Physics, v.v.i., Academy of Sciences CR, 18221 Prague, Czech Republic
2 Czech Technical University in Prague, FNSPE, Prague, Czech Republic
3 Kohat University of Science and Technology, Kohat, Khyber Pakhtunkhwa, Pakistan
4 Université Pierre et Marie Curie UPMC and LULI, École Polytechnique, Paris, France
5 Physics Department, Auburn University, Auburn, AL, USA
a e-mail: renner@fzu.cz
Published online: 15 November 2013
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 Lyγ self-emission is interpreted in terms of CE between C6+ and Al12+ in the near-wall zone. The spectroscopic identification of CE phenomena is supported by results of analytical and numerical calculations.
© Owned by the authors, published by EDP Sciences, 2013
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