TY - JOUR AU - Huang, Lingen AU - Šmíd, Michal AU - Yang, Long AU - Humphries, Oliver AU - Hagemann, Johannes AU - Engler, Thea AU - Pan, Xiayun AU - Cui, Yangzhe AU - Kluge, Thomas AU - Aguilar, Ritz AU - Baehtz, Carsten AU - Brambrink, Erik AU - Eren, Engin AU - Falk, Katerina AU - Laso Garcia, Alejandro AU - Göde, Sebastian AU - Gutt, Christian AU - Hassan, Mohamed AU - Heuser, Philipp AU - Höppner, Hauke AU - Kozlova, Michaela AU - Lu, Wei AU - Metzkes-Ng, Josefine AU - Masruri, Masruri AU - Mishchenko, Mikhail AU - Nakatsutsumi, Motoaki AU - Ota, Masato AU - Öztürk, Özgül AU - Pelka, Alexander AU - Prencipe, Irene AU - Preston, Thomas R. AU - Randolph, Lisa AU - Rehwald, Martin AU - Schlenvoigt, Hans-Peter AU - Schramm, Ulrich AU - Schwinkendorf, Jan-Patrick AU - Starke, Sebastian AU - Štefaníková, Radka AU - Thiessenhusen, Erik AU - Toncian, Monika AU - Toncian, Toma AU - Vorberger, Jan AU - Zastrau, Ulf AU - Zeil, Karl AU - Cowan, Thomas E. TI - Demonstration of full-scale spatiotemporal diagnostics of solid-density plasmas driven by an ultra-short relativistic laser pulse using an X-ray free-electron laser JO - Matter and radiation at extremes VL - 11 IS - 1 SN - 2468-080X CY - Melville, NY PB - AIP Publishing M1 - PUBDB-2025-04696 SP - 017201 PY - 2026 AB - Understanding the complex plasma dynamics in ultra-intense relativistic laser–solid interactions is of fundamental importance for applications of laser–plasma-based particle accelerators, the creation of high-energy-density matter, understanding planetary science, and laser-driven fusion energy. However, experimental efforts in this regime have been limited by the lack of accessibility of over-critical densities and the poor spatiotemporal resolution of conventional diagnostics. Over the last decade, the advent of femtosecond brilliant hard X-ray free-electron lasers (XFELs) has opened new horizons to overcome these limitations. Here, for the first time, we present full-scale spatiotemporal measurements of solid-density plasma dynamics, including preplasma generation with tens of nanometer scale length driven by the leading edge of a relativistic laser pulse, ultrafast heating and ionization at the main pulse arrival, the laser-driven blast wave, and transient surface return current-induced compression dynamics up to hundreds of picoseconds after interaction. These observations are enabled by utilizing a novel combination of advanced X-ray diagnostics including small-angle X-ray scattering, resonant X-ray emission spectroscopy, and propagation-based X-ray phase-contrast imaging simultaneously at the European XFEL-HED beamline station. LB - PUB:(DE-HGF)16 DO - DOI:10.1063/5.0279974 UR - https://bib-pubdb1.desy.de/record/639993 ER -