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Velocity gradient induced line splitting in x-ray emission accompanying plasma-wall interaction
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SYSNO ASEP 0395724 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Velocity gradient induced line splitting in x-ray emission accompanying plasma-wall interaction Author(s) Šmíd, Michal (FZU-D) RID
Renner, Oldřich (FZU-D) RID, ORCID
Liska, R. (CZ)Source Title Journal of Quantitative Spectroscopy and Radiative Transfer. - : Elsevier - ISSN 0022-4073
Roč. 125, Aug (2013), s. 38-44Number of pages 7 s. Language eng - English Country GB - United Kingdom Keywords laser-produced plasmas ; x-ray spectroscopy ; plasma-wall interaction ; spectral line profiles ; Doppler shift ; ion velocity gradients Subject RIV BL - Plasma and Gas Discharge Physics R&D Projects GAP205/10/0814 GA ČR - Czech Science Foundation (CSF) GAP205/11/0571 GA ČR - Czech Science Foundation (CSF) Institutional support FZU-D - RVO:68378271 UT WOS 000321681500005 DOI 10.1016/j.jqsrt.2013.04.012 Annotation High-resolution x-ray spectroscopy was applied to study the ion back-scattering in plasma–wall interaction. In experiments carried out on the Prague Asterix Laser System (PALS), the energetic ions produced at thin laser burnt-through Al foil impacted the secondary C target where they were decelerated, trapped and scattered in radial and backward directions. The environmental conditions in near-wall plasmas were analyzed using the high-dispersion x-ray spectroscopy and temporally-resolved x-ray imaging. The radial expansion of ions back-scattered in the near-wall region was directly observed via the Doppler effect induced splitting of the Al Heα intercombination line. The experimentally observed line splitting was modeled using a combination of the 2D arbitrary Lagrangian Eulerian hydrodynamics code PALE with the multifluid code MULTIF and spectrally postprocessed using HULLAC atomic model builder and CRETIN collisional-radiative code. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2014
Number of the records: 1