0510725 - FZÚ 2020 RIV GB eng J - Journal Article
Šmíd, Michal - Renner, Oldřich - Colaïtis, A. - Tikhonchuk, Vladimir - Schlegel, Theo - Rosmej, F.B.
Characterization of suprathermal electrons inside a laser accelerated plasma via highly-resolved K-alpha-emission.
Nature Communications. Roč. 10, č. 1 (2019), s. 1-8, č. článku 4212. ISSN 2041-1723. E-ISSN 2041-1723
R&D Projects: GA MŠMT EF16_013/0001793; GA MŠMT LQ1606
EU Projects: European Commission(XE) 654148 - LASERLAB-EUROPE
Grant - others:OP VVV - ELITAS(XE) CZ.02.1.01/0.0/0.0/16_013/0001793
Institutional support: RVO:68378271
Keywords : superthermal electron generation * kJ-ns-laser plasma * warm dense plasma * X-ray spectroscopy hot electrons vizualization
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 12.121, year: 2019 ; AIS: 5.261, rok: 2019
Method of publishing: Open access
DOI: https://doi.org/10.1038/s41467-019-12008-9

We present studies of non-thermal atomic states excited by suprathermal electrons in kJ-ns-laser produced plasmas. Highly spatially and spectrally resolved X-ray emission from the laserdeflected part of the warm dense Cu foil visualized the hot electrons. A multi-scale twodimensional hydrodynamic simulation including non-linear laser-plasma interactions and hot electron propagation has provided an input for ab initio non-thermal atomic simulations. The analysis revealed a significant delay between the maximum of laser pulse and presence of suprathermal electrons. Agreement between spectroscopic signatures and simulations demonstrates that combination of advanced high-resolution X-ray spectroscopy and nonthermal atomic physics offers a promising method to characterize suprathermal electrons inside the solid density matter.
Permanent Link: http://hdl.handle.net/11104/0301120