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Investigation on laser absorption and x-ray radiation in microstructured titanium targets heated by short-pulse relativistic laser pulses
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SYSNO ASEP 0585128 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Investigation on laser absorption and x-ray radiation in microstructured titanium targets heated by short-pulse relativistic laser pulses Author(s) Pan, X. (DE)
Šmíd, M. (DE)
Huang, L.G. (DE)
Falk, Kateřina (FZU-D) ORCIDNumber of authors 22 Article number 013025 Source Title Physical Review Research. - : American Physical Society
Roč. 6, č. 1 (2024)Number of pages 11 s. Language eng - English Country US - United States Keywords high-intensity short-pulse laser irradiation of solid targets ; laser-produced x-ray sources ; x-ray Thomson scattering measurements ; dense plasma Subject RIV BH - Optics, Masers, Lasers OECD category Optics (including laser optics and quantum optics) Method of publishing Open access Institutional support FZU-D - RVO:68378271 UT WOS 001148005400009 EID SCOPUS 85183577896 DOI 10.1103/PhysRevResearch.6.013025 Annotation The enhancement effect of a microstructured surface on laser absorption and characteristic Kα emission has been investigated by measuring K-shell emission from titanium (Ti) targets irradiated with high-intensity (∼1020 Wcm−2), subpicosecond (500 fs) laser pulses. The experimental results indicate a modest enhancement (1.6×) of Kα emission from microstructured targets compared to flat foils, but with a similar intensity and profile of Heα and Li-like satellites. Particle in-cell (PIC) simulations are implemented to further understand the underlying physical processes in the laser interaction with both targets, interpreting the mechanisms responsible for the Kα enhancement. The reasons for the lower-than-expected enhancement of Kα emission are discussed. The rapid heating of the bulk plasma might result in the premature shutdown of Kα emission before the thermalization of hot electrons or even the end of laser pulses. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2025 Electronic address https://hdl.handle.net/11104/0352861
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