Results 31 to 40 of about 31,660 (298)

Direct Observation of Ultrafast Non-thermal Melting by Ultrafast X-ray Diffraction [PDF]

Ultrafast Phenomena, 2001
Ultrafast nonthermal melting of femtosecond laser-irradiated germanium was observed directly for the first time using sub-picosecond, 1.54-angstrom x-ray diffraction. Such measurements allow the study of transient atomic motion fundamental to many processes in physics, chemistry, and biology.
Siders, C, Cavalleri, A, Sokolowski-Tinten, K, Toth, C, Guo, T, Kammler, M, von Hoegen, M, Wilson, K, von der Linde, D, Barty, C   +9 more
openaire   +4 more sources

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

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

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
core   +2 more sources

Detection of Nonthermal Melting by Ultrafast X-ray Diffraction

Science, 1999
Using ultrafast, time-resolved, 1.54 angstrom x-ray diffraction, thermal and ultrafast nonthermal melting of germanium, involving passage through nonequilibrium extreme states of matter, was observed. Such ultrafast, optical-pump, x-ray diffraction probe measurements provide a way to study many other transient processes in physics, chemistry, and ...
Siders, Craig W., Cavalleri, Andrea, Sokolowski-Tinten, Klaus, Toth, Csabe, Guo, Ting, Kammler, Martin, Horn-von Hoegen, Michael, Wilson, Kent R., von der Linde, Dietrich, Barty, Christopher P.P.   +9 more
openaire   +3 more sources

Structural and Magnetic Characterization of Large Area, Free-Standing Thin Films of Magnetic Ion Intercalated Dichalcogenides Mn0.25TaS2 and Fe0.25TaS2 [PDF]

, 2016
Free-standing thin films of magnetic ion intercalated transition metal dichalcogenides are produced using ultramicrotoming techniques. Films of thicknesses ranging from 30nm to 250nm were achieved and characterized using transmission electron diffraction
Cheong, S. W., Danz, Th., Liu, Q., Radu, I., Ropers, C., Tobey, R. I., Wang, L. H., Zhu, X. D.   +7 more
core   +4 more sources

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

Physical Review Letters, 2018
Published by APS, College Park, Md.
Chen, Z., Higley, D. j., Beye, M., Hantschmann, M., Mehta, V., Hellwig, O., Mitra, A., Bonetti, S., Bucher, M., Carron, S., Chase, T., Jal, E., Kukreja, R., Liu, T., Reid, A. h., Dakovski, G. l., Föhlisch, A., Schlotter, W. f., Dürr, H. a., Stöhr, J.   +19 more
openaire   +5 more sources

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
core   +2 more sources