Hard x-ray generation from zno nanowire targets in a non-relativistic regime of laser-solid interactions

  • We present a detailed investigation of X-ray emission from both flat and nanowire zinc oxide targets irradiated by 60 fs 5 × 1016 W/cm2 intensity laser pulses at a 0.8 µm wavelength. It is shown that the fluence of the emitted hard X-ray radiation in the spectral range 150–800 keV is enhanced by at least one order of magnitude for nanowire targets compared to the emission from a flat surface, whereas the characteristic Kα line emission (8.64 keV) is insensitive to the target morphology. Furthermore, we provide evidence for a dramatic increase of the fast electron flux from the front side of the nanostructured targets. We suggest that targets with nanowire morphology may advance development of compact ultrafast X-ray sources with an enhanced flux of hard X-ray emission that could find wide applications in highenergy density (HED) physics.

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Author:Zhanna Samsonova, Sebastian Höfer, Richard Hollinger, Tino Kämpfer, Ingo Uschmann, Robert Röder, Lukas Trefflich, Olga N. Rosmej, Eckhart Förster, Carsten Ronning, Daniil Kartashov, Christian Spielmann
Parent Title (English):Applied Sciences
Place of publication:Basel
Document Type:Article
Year of Completion:2018
Date of first Publication:2018/09/25
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2019/11/06
Tag:X-ray generation; X-ray spectroscopy; laser plasma emission; laser-matter interaction; nanostructured arrays; ultrashort laser pulses
Issue:10, Art. 1728
Page Number:11
First Page:1
Last Page:11
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoCreative Commons - Namensnennung 4.0