Results 41 to 50 of about 30,908 (277)

Femtosecond X-ray diffraction from two-dimensional protein crystals

open access: yesIUCrJ, 2014
X-ray diffraction patterns from two-dimensional (2-D) protein crystals obtained using femtosecond X-ray pulses from an X-ray free-electron laser (XFEL) are presented.
Matthias Frank   +24 more
doaj   +1 more source

Fine microstructure formation in steel under ultrafast heating and cooling

open access: yesScientific Reports, 2022
This study evaluates phase transformation kinetics under ultrafast cooling using femtosecond X-ray diffraction for the operand measurements of the dislocation densities in Fe–0.1 mass% C–2.0 mass% Mn martensitic steel.
Mitsuharu Yonemura   +13 more
doaj   +1 more source

Anisotropic structural dynamics of monolayer crystals revealed by femtosecond surface x-ray scattering

open access: yes, 2018
X-ray scattering is one of the primary tools to determine crystallographic configuration with atomic accuracy. However, the measurement of ultrafast structural dynamics in monolayer crystals remains a long-standing challenge due to a significant ...
Clark, Genevieve   +24 more
core   +1 more source

Enhanced ultrafast X-ray diffraction by transient resonances

open access: yes, 2022
Diffraction-before-destruction imaging with single ultrashort X-ray pulses has the potential to visualise non-equilibrium processes, such as chemical reactions, at the nanoscale with sub-femtosecond resolution in the native environment without the need of crystallization.
Kuschel, Stephan   +17 more
openaire   +2 more sources

Strain wave pathway to semiconductor-to-metal transition revealed by time-resolved X-ray powder diffraction

open access: yesNature Communications, 2021
Ultrafast control of materials draws interest. Here, the authors extend X-ray powder diffraction to the femtosecond timescale to follow the photo-induced semiconductor to metal transition in titanium pentaoxide, observing a phase front that moves at the ...
C. Mariette   +45 more
doaj   +1 more source

Impact of ultrafast electronic damage in single particle x-ray imaging experiments

open access: yes, 2012
In single particle coherent x-ray diffraction imaging experiments, performed at x-ray free-electron lasers (XFELs), samples are exposed to intense x-ray pulses to obtain single-shot diffraction patterns.
E. Weckert   +7 more
core   +1 more source

Ultrafast optical stress on BaFe_{2}As_{2}

open access: yesPhysical Review Research, 2021
We investigate the ultrafast lattice dynamics in BaFe_{2}As_{2} via time-resolved x-ray diffraction measurements using an x-ray free-electron laser at SPring-8 Angstrom Compact free-electron LAser (SACLA).
Takeshi Suzuki   +16 more
doaj   +1 more source

Gas gun shock experiments with single-pulse x-ray phase contrast imaging and diffraction at the Advanced Photon Source

open access: yes, 2012
The highly transient nature of shock loading and pronounced microstructure effects on dynamic materials response call for {\it in situ}, temporally and spatially resolved, x-ray-based diagnostics.
B. J. Jensen   +9 more
core   +1 more source

Ultrafast Self-Induced X-Ray Transparency and Loss of Magnetic Diffraction [PDF]

open access: yesPhysical Review Letters, 2018
Published by APS, College Park, Md.
Chen, Z.   +19 more
openaire   +5 more sources

Concepts and use cases for picosecond ultrasonics with x-rays

open access: yesPhotoacoustics, 2023
This review discusses picosecond ultrasonics experiments using ultrashort hard x-ray probe pulses to extract the transient strain response of laser-excited nanoscopic structures from Bragg-peak shifts.
Maximilian Mattern   +5 more
doaj   +1 more source

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