Microstructured layered targets for improved laser-induced x-ray backlighters

0561940 - FZÚ 2023 RIV US eng J - Článek v odborném periodiku
Sander, S. - Ebert, A. - Hartnagel, D. - Hesse, M. - Pan, X. - Schaumann, G. - Šmíd, M. - Falk, Kateřina - Roth, M.
Microstructured layered targets for improved laser-induced x-ray backlighters.
Physical Review E. Roč. 104, č. 6 (2021), č. článku 065207. ISSN 2470-0045. E-ISSN 2470-0053
GRANT EU: European Commission(XE) 654148 - LASERLAB-EUROPE
Institucionální podpora: RVO:68378271
Klíčová slova: X-ray back-lighter * PHELIX laser * silicon front target layer * copper back target layer
Obor OECD: Fluids and plasma physics (including surface physics)
Impakt faktor: 2.707, rok: 2021
Způsob publikování: Omezený přístup
https://doi.org/ 10.1103/PhysRevE.104.065207

We present the usage of two-layer targets with laser-illuminated front-side microstructures for x-ray backlighter applications. The targets consisted of a silicon front layer and copper back side layer. The structured layer was irradiated by the 500-fs PHELIX laser with an intensity above 1020 W cm−2. The total emission andone-dimensional extent of the copper Kα x-ray emission as well as a wide spectral range between 7.9 and 9.0 keV were recorded with an array of crystal spectrometers. The measurements show that the front-side modifications of the silicon in the form of conical microstructures maintain the same peak brightness of the Kα emission as flat copper foils while suppressing the thermal emission background significantly.

Trvalý link: https://hdl.handle.net/11104/0334369