Results 51 to 60 of about 564,176 (286)

Studies of a Terawatt X-Ray Free-Electron Laser [PDF]

, 2018
The possibility of constructing terawatt (TW) x-ray free-electron lasers (FELs) has been discussed using novel superconducting helical undulators [5].
Freund, H. P., van der SLot, P. J. M.
core   +4 more sources

Evaluation of the Potential of Laser Shock Peening Compared with Cold Expansion for Improving Fatigue Resistance of Riveted Lap Joints of Aerospace Grade 7175 Al Alloy

Advanced Engineering Materials, EarlyView.
This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar, David Osman Busse, Maximilian Sprengel, Domenico Furfari, Marc‐André Nielsen, Guilherme Abreu Faria, Jérémy Epp   +6 more
wiley   +1 more source

Ultrafast time-resolved x-ray absorption spectroscopy of ionized urea and its dimer through ab initio nonadiabatic dynamics

Structural Dynamics, 2021
Investigating the early dynamics of chemical systems following ionization is essential for our understanding of radiation damage. However, experimental as well as theoretical investigations are very challenging due to the complex nature of these ...
Yashoj Shakya, Ludger Inhester, Caroline Arnold, Ralph Welsch, Robin Santra   +4 more
doaj   +1 more source

An extended model of the quantum free-electron laser [PDF]

, 2017
Previous models of the quantum regime of operation of the Free Electron Laser (QFEL) have performed an averaging and the application of periodic boundary conditions to the coupled Maxwell - Schrodinger equations over short, resonant wavelength intervals ...
Brown, M. S., Campbell, L. T., Henderson, J. R., McNeil, B. W. J.   +3 more
core   +2 more sources

Trace Nickel Activated Biphasic Core‐CuOii/Shell‐CuOi Secondary Microspheres Enable Room Temperature Parts‐Per‐Trillion‐Level NO2 Detection

Advanced Engineering Materials, EarlyView.
An idea of designing novel sensors is proposed by creating appropriate Schottky barriers and vacancies between isomorphous Core‐CuOii/ Shell‐CuOi secondary microspheres and enhancing catalytic and spill‐over effects, and electronegativity via spontaneous biphasic separation, self‐assembly, and trace‐Ni‐doping.
Bala Ismail Adamu, Peipei Chen, Shafia Mukhtar Ibrahim, Mukhtar Lawan Adam, Attia Falak, Mokhotjwa Simon Dhlamini, Hanfu Wang, Lingxiang Jiang, Weiguo Chu   +8 more
wiley   +1 more source

First Experiments in Structural Biology at the European X-ray Free-Electron Laser

Applied Sciences, 2020
Ultrabright pulses produced in X-ray free-electron lasers (XFELs) offer new possibilities for industry and research, particularly for biochemistry and pharmaceuticals.
Grant Mills, Richard Bean, Adrian P. Mancuso   +2 more
doaj   +1 more source

Effects of Carbon Nanoparticles on Triboelectro‐Induced Surface Defects

Advanced Engineering Materials, EarlyView.
Carbon nanoparticles added to grease modify the electrocontact behavior. The synergy of particle concentration and electric current dominates the surface damage of metals in contact. Electrical surface damage caused by current leakage is a critical challenge in high‐performance applications such as electric vehicle (EV) drivetrains and wind turbine ...
Mohsen Tajedini, Lu Fang, Jacob Bons, Mohammad Humaun Kabir, Evan Johnson, Joe Kosmoski, Hong Liang   +6 more
wiley   +1 more source

Operation of Photo Electron Spectrometers for Non-Invasive Photon Diagnostics at the European X-Ray Free Electron Laser

Applied Sciences
Angle-resolved photoelectron spectrometers with microchannel plate detectors and fast digitizer electronics are versatile and powerful devices for providing non-invasive single-shot photon diagnostics at a MHz repetition rate X-ray free-electron lasers ...
Joakim Laksman, Florian Dietrich, Theophilos Maltezopoulos, Jia Liu, Danilo Enoque Ferreira de Lima, Natalia Gerasimova, Ivars Karpics, Naresh Kujala, Philipp Schmidt, Suren Karabekyan, Svitozar Serkez, Jan Grünert   +11 more
doaj   +1 more source

Molecular movie of ultrafast coherent rotational dynamics of OCS

Nature Communications, 2019
Molecular movies provide crucial information of fundamental processes like energy and charge transfer, bond breaking etc. Here the authors show the time evolution of the rotational wave packet called the molecular movie of OCS molecules by Coulomb ...
Evangelos T. Karamatskos, Sebastian Raabe, Terry Mullins, Andrea Trabattoni, Philipp Stammer, Gildas Goldsztejn, Rasmus R. Johansen, Karol Długołecki, Henrik Stapelfeldt, Marc J. J. Vrakking, Sebastian Trippel, Arnaud Rouzée, Jochen Küpper   +12 more
doaj   +1 more source

Strong-field physics in the molecular frame [PDF]

EPJ Web of Conferences, 2019
Laser-aligned carbonyl-sulfide molecules were strong-field ionized using mid-infrared light. Investigating the strong-field effects in the molecular frame allowed to add novel facets to the understanding of the intrinsic nature of strong-field physics.
Trabattoni Andrea, Trippel Sebastian, De Giovannini Umberto, Olivieri Jean-Frangois, Wiese Joss, Mullins Terry, Onvlee Jolijn, Son Sang-Kil, Frusteri Biagio, Rubio Angel, Küpper Jochen   +10 more
doaj   +1 more source