Results 61 to 70 of about 133,829 (307)

From attosecond to zeptosecond coherent control of free-electron wave functions using semi-infinite light fields [PDF]

open access: yes, 2017
Light-electron interaction in empty space is the seminal ingredient for free-electron lasers and also for controlling electron beams to dynamically investigate materials and molecules. Pushing the coherent control of free electrons by light to unexplored
Barwick, B.   +10 more
core   +3 more sources

Design considerations for table-top, laser-based VUV and X-ray free electron lasers [PDF]

open access: yes, 2006
A recent breakthrough in laser-plasma accelerators, based upon ultrashort high-intensity lasers, demonstrated the generation of quasi-monoenergetic GeV-electrons.
F. Grüner   +14 more
semanticscholar   +1 more source

Quantum Effects with an X-Ray Free-Electron Laser [PDF]

open access: yesPhysical Review Letters, 2002
A quantum kinetic equation coupled with Maxwell's equation is used to estimate the laser power required at an XFEL facility to expose intrinsically quantum effects in the process of QED vacuum decay via spontaneous pair production. A 9 TW-peak XFEL laser with photon energy 8.3 keV could be sufficient to initiate particle accumulation and the consequent
Roberts, C. D.   +2 more
openaire   +3 more sources

Unlocking the Power of Quercetin‐Encapsulated Mesoporous Bioactive Glass Nanoparticles: A Multifunctional Approach to Bone Regeneration

open access: yesAdvanced Engineering Materials, EarlyView.
Mesoporous bioactive glass nanoparticles (MBGNs) are investigated for bone regeneration given their remarkable structural and functional properties. MBGNs are functionalized with Mn and Cu and incorporated with quercetin, a natural flavonoid exhibiting antioxidant, anti‐inflammatory, and antimicrobial properties.
Giovanni Lo Bello   +5 more
wiley   +1 more source

Formation of electron bunches for harmonic cascade x-ray free electron lasers

open access: yesPhysical Review Special Topics. Accelerators and Beams, 2006
Specific requirements for the electron beam in harmonic cascade-free electron lasers, together with means to produce such beams, are presented. All results are illustrated with simulations and particle tracking studies.
M. Cornacchia   +3 more
doaj   +1 more source

At-wavelength characterization of X-ray wavefronts in Bragg diffraction from crystals

open access: yesJournal of Synchrotron Radiation, 2023
The advent of next-generation synchrotron radiation sources and X-ray free-electron lasers calls for high-quality Bragg-diffraction crystal optics to preserve the X-ray beam coherence and wavefront.
Xianbo Shi   +6 more
doaj   +1 more source

Bayesian algorithms for recovering structure from single-particle diffraction snapshots of unknown orientation: a comparison [PDF]

open access: yes, 2010
The advent of X-ray Free Electron Lasers promises the possibility to determine the structure of individual particles such as microcrystallites, viruses and biomolecules from single-shot diffraction snapshots obtained before the particle is destroyed by ...
Abbas Ourmazd   +17 more
core   +3 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

open access: yesAdvanced 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   +6 more
wiley   +1 more source

Mixing injector enables time-resolved crystallography with high hit rate at X-ray free electron lasers

open access: yesStructural Dynamics, 2016
Knowledge of protein structure provides essential insight into function, enhancing our understanding of diseases and enabling new treatment development.
George D. Calvey   +3 more
semanticscholar   +1 more source

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

open access: yesAdvanced 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   +8 more
wiley   +1 more source

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