Results 21 to 30 of about 30,908 (277)

Recent progress in research on the dynamic process of high-energy explosives through pump-probe experiments at high-intensity laser facilities

Energetic Materials Frontiers, 2023
To accurately predict the detonation and safety performances of high-energy explosives, it is necessary to investigate their reaction mechanisms on different scales, which, however, presents a challenge due to the complex reaction kinetics of the ...
Gen-bai Chu, Tao Xi, Shao-yi Wang, Min Shui, Yong-hong Yan, Guo-qing Lv, Yao Wang, Ming-hai Yu, Xiao-hui Zhang, Fang Tan, Jian-ting Xin, Liang Wang, Yu-chi Wu, Jing-qin Su, Wei-min Zhou   +14 more
doaj   +1 more source

Fundamental Limits on Spatial Resolution in Ultrafast X-ray Diffraction

Applied Sciences, 2017
X-ray Free-Electron Lasers have made it possible to record time-sequences of diffraction images to determine changes in molecular geometry during ultrafast photochemical processes.
Adam Kirrander, Peter M. Weber
doaj   +1 more source

Ultrafast x-ray imaging of pulsed plasmas in water

Physical Review Research, 2021
Ultrafast x-ray imaging is useful for diagnosing a wide range of nanosecond-time scale physical processes, particularly those concealed by optical emission or otherwise opaque objects.
Christopher Campbell, Xin Tang, Yancey Sechrest, Kamel Fezzaa, Zhehui Wang, David Staack   +5 more
doaj   +1 more source

Local terahertz field enhancement for time-resolved x-ray diffraction [PDF]

, 2017
We report local field strength enhancement of single-cycle terahertz (THz) pulses in an ultrafast time-resolved x-ray diffraction experiment. We show that patterning the sample with gold microstructures increases the THz field without changing the THz
C. A. F. Vaz, C. Bernhard, D. Zhu, J. M. Glownia, M. C. Hoffmann, M. Kozina, M. Pancaldi, M. Radovic, P. Marsik, S. Bonetti, T. van Driel, U. Staub, Warren B. E.   +12 more
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Transient lattice deformations of crystals studied by means of ultrafast time-resolved x-ray and electron diffraction

Structural Dynamics, 2018
Ultrafast lattice deformation of tens to hundreds of nanometer thick metallic crystals, after femtosecond laser excitation, was measured directly using 8.04 keV subpicosecond x-ray and 59 keV femtosecond electron pulses.
Runze Li, Kyle Sundqvist, Jie Chen, H. E. Elsayed-Ali, Jie Zhang, Peter M. Rentzepis   +5 more
doaj   +1 more source

Identification of the Decay Pathway of Photoexcited Nucleobases

Ultrafast Science, 2023
The identification of the decay pathway of the nucleobase uracil after being photoexcited by ultraviolet light has been a long-standing problem. Various theoretical models have been proposed but yet to be verified. Here, we propose an experimental scheme
Xiangxu Mu, Ming Zhang, Jiechao Feng, Hanwei Yang, Nikita Medvedev, Xinyang Liu, Leyi Yang, Zhenxiang Wu, Haitan Xu, Zheng Li   +9 more
doaj   +1 more source

Dynamical limits for the molecular switching in a photoexcited material revealed by X-ray diffraction

Communications Physics, 2022
Ultrafast methods have the ability to transiently decouple transitions between subsystems that evolve simultaneously at thermal equilibrium. Here, time-resolved X-ray diffraction reveals a time delay between volumetric and spin-state switching in a spin ...
Alix Volte, Celine Mariette, Roman Bertoni, Marco Cammarata, Xu Dong, Elzbieta Trzop, Herve Cailleau, Eric Collet, Matteo Levantino, Michael Wulff, Jacek Kubicki, Feng-Lei Yang, Marie-Laure Boillot, Benoit Corraze, Laurentiu Stoleriu, Cristian Enachescu, Maciej Lorenc   +16 more
doaj   +1 more source

UDKM1DSIM A simulation toolkit for 1D ultrafast dynamics in condensed matter [PDF]

, 2014
The UDKM1DSIM toolbox is a collection of MATLAB MathWorks Inc. classes and routines to simulate the structural dynamics and the according X ray diffraction response in one dimensional crystalline sample structures upon an arbitrary time dependent ...
Bargheer, M., Bojahr, A., Herzog, M., Schick, D., Shayduk, R., von Korff Schmising, C.   +5 more
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Ultra-bright, ultra-broadband hard x-ray driven by laser-produced energetic electron beams [PDF]

, 2013
We propose a new method of obtaining a compact ultra-bright, ultra-broadband hard X-ray source. This X-ray source has a high peak brightness in the order of 1022 photons/(s mm2 mrad2 0.1\%BW), an ultrashort duration (10 fs), and a broadband spectrum ...
Baifei Shen, Jackson J. D., Jiancai Xu, Liangliang Ji, Lingang Zhang, Longqing Yi, Tongjun Xu, Wang X., Wenpeng Wang, Xiaofeng Wang, Xiaomei Zhang, Xueyan Zhao, Yahong Yu, Yin Shi, Zhizhan Xu   +14 more
core   +1 more source

Ultrafast X-ray diffraction

, 2005
This study presents recent developments and applications of ultrafast X-ray diffraction. These include optical pump/X-ray probe experiments for performing ultrafast X-ray spectroscopy, time-resolved X-ray diffraction for the investigation of electronically induced solid-liquid phase transformations in semiconductors, and time-resolved X-ray diffraction
Sokolowski-Tinten, Klaus, Blome, C., Blums, J., Shymanovich, Uladzimir, Nicoul, Matthieu, Cavalleri, Andrea, Tarasevitch, Alexander, Horn-von Hoegen, Michael, Kammler, Martin, von der Linde, Dietrich   +9 more
openaire   +3 more sources