Authors:	Randolph, Lisa Banjafar, Mohammadreza Preston, Thomas R. Yabuuchi, Toshinori Makita, Mikako Dover, Nicholas P. Rödel, Christian Göde, Sebastian Inubushi, Yuichi Jakob, Gerhard Kaa, Johannes Kon, Akira Koga, James K. Ksenzov, Dmitriy Matsuoka, Takeshi Nishiuchi, Mamiko Paulus, Michael Schon, Frederic Sueda, Keiichi Sentoku, Yasuhiko Togashi, Tadashi Bussmann, Michael Cowan, Thomas E. Kläui, Mathias Fortmann-Grote, Carsten Huang, Lingen Mancuso, Adrian P. Kluge, Thomas Gutt, Christian Nakatsutsumi, Motoaki
Title:	Nanoscale subsurface dynamics of solids upon high-intensity femtosecond laser irradiation observed by grazing-incidence x-ray scattering
Online publication date:	28-Nov-2022
Year of first publication:	2022
Language:	english
Abstract:	Observing ultrafast laser-induced structural changes in nanoscale systems is essential for understanding the dynamics of intense light-matter interactions. For laser intensities on the order of 10(14) W/cm(2), highly collisional plasmas are generated at and below the surface. Subsequent transport processes such as heat conduction, electron-ion thermalization, surface ablation, and resolidification occur at picosecond and nanosecond timescales. Imaging methods, e.g., using x-ray free-electron lasers (XFEL), were hitherto unable to measure the depth-resolved subsurface dynamics of laser-solid interactions with appropriate temporal and spatial resolution. Here we demonstrate picosecond grazing-incidence small-angle x-ray scattering (GISAXS) from laser-produced plasmas using XFEL pulses. Using multilayer (ML) samples, both the surface ablation and subsurface density dynamics are measured with nanometer depth resolution. Our experimental data challenges the state-of-the-art modeling of matter under extreme conditions and opens new perspectives for laser material processing and high-energy density science.
DDC:	530 Physik 530 Physics
Institution:	Johannes Gutenberg-Universität Mainz
Department:	FB 08 Physik, Mathematik u. Informatik
Place:	Mainz
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-8389
Version:	Published version
Publication type:	Zeitschriftenaufsatz
Document type specification:	Scientific article
License:	CC BY
Information on rights of use:	https://creativecommons.org/licenses/by/4.0/
Journal:	Physical review research 4 3
Pages or article number:	033038
Publisher:	American Physical Society
Publisher place:	College Park, Md.
Issue date:	2022
ISSN:	2643-1564
Publisher DOI:	10.1103/PhysRevResearch.4.033038
Appears in collections:	JGU-Publikationen