38 citations · 116 across the 22 of their papers we have counts for
24 papers
XFEL Imaging Techniques for High Energy Density and Inertial Fusion Energy Research at HED-HiBEF
Alejandro Laso Garcia, Mikhail Mishchenko, Victorien Bouffetier +53
The imaging platform developed at the High Energy Density - Helmholtz International Beamline for Extreme Fields (HED-HiBEF) instrument at the European XFEL and its applications to…
Microscopy X-ray Imaging enriched with Small Angle X-ray Scattering for few nanometer resolution reveals shock waves and compression in intense short pulse laser irradiation of solids
Thomas Kluge, Arthur Hirsch-Passicos, Jannis Schulz +23
Understanding how laser pulses compress solids into high-energy-density states requires diagnostics that simultaneously resolve macroscopic geometry and nanometer-scale structure.…
Probing laser-driven surface and subsurface dynamics via grazing-incidence XFEL scattering and diffraction
Lisa Randolph, Özgül Öztürk, Dmitriy Ksenzov +34
We demonstrate a grazing-incidence x-ray platform that simultaneously records time-resolved grazing-incidence small-angle x-ray scattering (GISAXS) and grazing-incidence x-ray diff…
Probing ultrafast heating and ionization dynamics in solid density plasmas with time-resolved resonant X-ray absorption and emission
Lingen Huang, Mikhail Mishchenko, Michal Šmíd +34
Heating and ionization are among the most fundamental processes in relativistic laser--solid interactions; however, their spatiotemporal evolution remains challenging to capture ex…
Demonstration of full-scale spatio-temporal diagnostics of solid-density plasmas driven by an ultra-short relativistic laser pulse using an X-ray free-electron laser
Lingen Huang, Michal Šmíd, Long Yang +42
Understanding the complex plasma dynamics in ultra-intense relativistic laser-solid interactions is of fundamental importance to the applications of laser plasma-based particle acc…
High-Quality Ultra-Fast Total Scattering and Pair Distribution Function Data using an X-ray Free Electron Laser
Adam F. Sapnik, Philip A. Chater, Dean S. Keeble +48
High-quality total scattering data, a key tool for understanding atomic-scale structure in disordered materials, require stable instrumentation and access to high momentum transfer…
Strong geometry dependence of the X-ray Thomson Scattering Spectrum in single crystal silicon
Thomas Gawne, Zhandos A. Moldabekov, Oliver S. Humphries +17
We report on results from an experiment at the European XFEL where we measured the x-ray Thomson scattering (XRTS) spectrum of single crystal silicon with ultrahigh resolution. Com…
Effects of Mosaic Crystal Instrument Functions on X-ray Thomson Scattering Diagnostics
Thomas Gawne, Hannah Bellenbaum, Luke B. Fletcher +36
Mosaic crystals, with their high integrated reflectivities, are widely-employed in spectrometers used to diagnose high energy density systems. X-ray Thomson scattering (XRTS) has e…
(Sub-)picosecond surface correlations of femtosecond laser excited Al-coated multilayers observed by grazing-incidence x-ray scattering
Lisa Randolph, Mohammadreza Banjafar, Toshinori Yabuuchi +22
Femtosecond high-intensity laser pulses at intensities surpassing can generate a diverse range of functional surface nanostructures. Achieving prec…
The importance of temperature-dependent collision frequency in PIC simulation on nanometric density evolution of highly-collisional strongly-coupled dense plasmas
Mohammadreza Banjafar, Lisa Randolph, Lingen Huang +17
Particle-in-Cell (PIC) method is a powerful plasma simulation tool for investigating high-intensity femtosecond laser-matter interaction. However, its simulation capability at high…
Ultrahigh Resolution X-ray Thomson Scattering Measurements at the European XFEL
Thomas Gawne, Zhandos A. Moldabekov, Oliver S. Humphries +18
Using a novel ultrahigh resolution (eV) setup to measure electronic features in x-ray Thomson scattering (XRTS) experiments at the European XFEL in Germany, we have…
Cylindrical compression of thin wires by irradiation with a Joule-class short pulse laser
Alejandro Laso Garcia, Long Yang, Victorien Bouffetier +14
Equation of state measurements at Jovian or stellar conditions are currently conducted by dynamic shock compression driven by multi-kilojoule multi-beam nanosecond-duration lasers.…
Visualizing Plasmons and Ultrafast Kinetic Instabilities in Laser-Driven Solids using X-ray Scattering
Paweł Ordyna, Carsten Bähtz, Erik Brambrink +27
Ultra-intense lasers that ionize and accelerate electrons in solids to near the speed of light can lead to kinetic instabilities that alter the laser absorption and subsequent elec…
Probing the dynamics of solid density micro-wire targets after ultra-intense laser irradiation using a free-electron laser
Thomas Kluge, Michael Bussmann, Eric Galtier +22
In this paper, we present an experiment that explores the plasma dynamics of a 7 micron diameter carbon wire after being irradiated with a near-relativistic-intensity short pulse l…
Heating in Multi-Layer Targets at ultra-high Intensity Laser Irradiation and the Impact of Density Oscillation
Franziska-Luise Paschke-Bruehl, Mohammad Banjafar, Marco Garten +7
We present a computational study of isochoric heating in multi-layered targets at ultra-high intensity laser irradiation (approx. 10**20 W/cm**2). Previous studies have shown enhan…
Amortized Bayesian Inference of GISAXS Data with Normalizing Flows
Maksim Zhdanov, Lisa Randolph, Thomas Kluge +4
Grazing-Incidence Small-Angle X-ray Scattering (GISAXS) is a modern imaging technique used in material research to study nanoscale materials. Reconstruction of the parameters of an…
Resolving molecular diffusion and aggregation of antibody proteins with megahertz X-ray free-electron laser pulses
Mario Reiser, Anita Girelli, Anastasia Ragulskaya +26
X-ray free-electron lasers (XFELs) with megahertz repetition rate can provide novel insights into structural dynamics of biological macromolecule solutions. However, very high dose…
Gelation dynamics upon pressure-induced liquid-liquid phase separation in a water-lysozyme solution
M. Moron, A. Al-Masoodi, C. Lovato +9
Employing X-ray photon correlation spectroscopy we measure the kinetics and dynamics of a pressure-induced liquid-liquid phase separation (LLPS) in a water-lysozyme solution. Scatt…
Automated matching of two-time X-ray photon correlation maps from protein dynamics with Cahn-Hilliard type simulations using autoencoder networks
S. Timmermann, V. Starostin, A. Girelli +10
We use machine learning methods for an automated classification of experimental XPCS two-time correlation functions from an arrested liquid-liquid phase separation of a protein sol…
Probing ultrafast laser plasma processes inside solids with resonant small-angle X-ray scattering
Lennart Gaus, Lothar Bischoff, Michael Bussmann +33
Extreme states of matter exist throughout the universe e.g. inside planetary cores, stars or astrophysical jets. Such conditions are generated in the laboratory in the interaction…
Nanoscale subsurface dynamics of solids upon high-intensity laser irradiation observed by femtosecond grazing-incidence x-ray scattering
Lisa Randolph, Mohammadreza Banjafar, Thomas R. Preston +28
Observing ultrafast laser-induced structural changes in nanoscale systems is essential for understanding the dynamics of intense light-matter interactions. For laser intensities on…
Nanoscale Rigidity in Cross-Linked Micelle Networks Revealed by XPCS Nanorheology
M. Reiser, J. Hallmann, J. Möller +11
Solutions of wormlike micelles can form cross-linked networks on microscopic length scales. The unique mechanical properties of these complex fluids are driven by the interplay bet…
Nanoscale transient magnetization gratings excited and probed by femtosecond extreme ultraviolet pulses
D. Ksenzov, A. A. Maznev, V. Unni +15
We utilize coherent femtosecond extreme ultraviolet (EUV) pulses derived from a free electron laser (FEL) to generate transient periodic magnetization patterns with periods as shor…
Low dose X-ray speckle visibility spectroscopy reveals nanoscale dynamics in radiation sensitive ionic liquids
Jan Verwohlt, Mario Reiser, Lisa Randolph +6
X-ray radiation damage provides a serious bottle neck for investigating μs to s dynamics on nanometer length scales employing X-ray photon correlation spectroscopy. This limitation…