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K-shell spectroscopic diagnosis of suprathermal electrons at fusion-relevant environmental conditions
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SYSNO ASEP 0487462 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title K-shell spectroscopic diagnosis of suprathermal electrons at fusion-relevant environmental conditions Author(s) Renner, Oldřich (FZU-D) RID, ORCID
Šmíd, Michal (FZU-D) RID
Khaghani, D. (FR)
Rosmej, F.B. (FR)Number of authors 4 Article number 012091 Source Title Journal of Physics: Conference series, 688. - Bristol : IOP Publishing Ltd., 2016 - ISSN 1742-6588 Pages s. 1-4 Number of pages 4 s. Publication form Print - P Action International Conference on Inertial Fusion Sciences and Applications /8./, IFSA 2013 Event date 08.09.2013 - 13.09.2013 VEvent location Nara Country JP - Japan Event type WRD Language eng - English Country GB - United Kingdom Keywords laser-produced plasma ; shock ignition Subject RIV BL - Plasma and Gas Discharge Physics OECD category Fluids and plasma physics (including surface physics) R&D Projects ED1.1.00/02.0061 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) EE2.3.20.0279 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support FZU-D - RVO:68378271 UT WOS 000376159100091 EID SCOPUS 84964805962 DOI 10.1088/1742-6596/688/1/012091 Annotation Fast-electron-induced changes in the ion charge distribution lead to a substantial modification of radiative properties of x-ray emitting systems. We report Cu K-shell spectra emitted from 1.5-mu m-thick Cu foils irradiated by laser intensities up to 5x10(16) W/cm(2) using the fundamental and frequency tripled radiation of the Prague iodine laser system PALS, i.e., at conditions characteristic for laser spikes anticipated in the shock ignition scheme. The emission of the lower-ionization-stage ions observed as a fine structure merged with the Cu K alpha(1,2) doublet and spectral lines corresponding to transitions in He-like to Ne-like Cu atoms were identified. The spectra analysis based on a combination of MULTI2D hydrodynamic modelling of the plasma evolution and its emissivity synthesized by collisional-radiative code FLYCHK provides information on distribution of hot electron fractions at low plasma temperatures. The procedure used for interpretation of experimental data contributes to a development of alternative methods for diagnosis of suprathermal electrons. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2018
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