Results 81 to 90 of about 624,799 (321)

Active FEL-Klystrons as Formers of Femto-Second Clusters of Electromagnetic Field. Description of Models on the Basis of Sections of ‘Ordinary’ FEL’: Analisys [PDF]

Журнал нано- та електронної фізики, 2011
Physical processes of ultrashort electromagnetic cluster formation in multiharmonic parametrical free electron lasers are analyzed. The conditions, which are necessary for formation of such clusters, are found out.
V.V. Kulish, A.V. Lysenko, A.Ju. Brusnik
doaj  

Atomic inner-shell radiation seeded free-electron lasers

Physical Review Accelerators and Beams, 2018
In order to effectively improve the output quality of x-ray free electron laser (XFEL), we theoretically propose an XFEL scheme seeded by atomic inner-shell laser.
Han Zhang, Kai Li, Jiawei Yan, Haixiao Deng, Baoyuan Sun   +4 more
doaj   +1 more source

Membrane protein structural biology using X-ray free electron lasers.

Current Opinion in Structural Biology, 2015
Membrane protein structural biology has benefitted tremendously from access to micro-focus crystallography at synchrotron radiation sources. X-ray free electron lasers (XFELs) are linear accelerator driven X-ray sources that deliver a jump in peak X-ray ...
R. Neutze, G. Brändén, G. Schertler
semanticscholar   +1 more source

Influence of Sample Preparation and Processing Procedures on the Thermal Diffusivity of MgO‐C Refractories

Advanced Engineering Materials, EarlyView.
The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan, Rhena Wulf, Till M. J. Stadtmüller, Christos G. Aneziris, Tobias M. Fieback   +4 more
wiley   +1 more source

Linear optics correction for linacs and free electron lasers

Physical Review Accelerators and Beams, 2018
Linear optics errors in the linac, the transport line, and the undulator section of a free electron laser (FEL) can significantly impact the FEL performance.
Tong Zhang, Xiaobiao Huang, Tim Maxwell
doaj   +1 more source

Tunable Electron Multibunch Production in Plasma Wakefield Accelerators [PDF]

, 2014
Synchronized, independently tunable and focused $\mu$J-class laser pulses are used to release multiple electron populations via photo-ionization inside an electron-beam driven plasma wave.
Andonian, G., Aniculaesei, C., Bruhwiler, D. L., Campbell, L. T., Cormier, E., Deng, A., Ersfeld, B., Hidding, B., Hogan, M. J., Islam, M. R., Jaroszynski, D., Karger, O., McNeil, B. W. J., Murokh, A., Rosenzweig, J. B., Sheng, Z. -M., Wittig, G., Xi, Y.   +17 more
core   +1 more source

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 more
wiley   +1 more source

Quantum regime of free electron lasers starting from noise

Physical Review Special Topics. Accelerators and Beams, 2006
We investigate the quantum regime of a high-gain free-electron laser starting from noise. In the first part, we neglect the radiation propagation and we formulate a quantum linear theory of the N-particle free-electron laser Hamiltonian model, quantizing
R. Bonifacio, N. Piovella, G. R. M. Robb, A. Schiavi   +3 more
doaj   +1 more source

Minimum Spectral Bandwidth in Echo Seeded Free Electron Lasers

Frontiers in Physics, 2019
This paper examines the impact of non-linear longitudinal phase distortions on the spectral bandwidth in echo seeded free electron lasers (FELs). It extends the existing theory developed in Hemsing [1] for echo-enabled harmonic generation (EEHG) to ...
Erik Hemsing
doaj   +1 more source

Characterization of Nitinol Produced by Laser Powder Bed Fusion for Mechanical Metamaterial Applications

Advanced Engineering Materials, EarlyView.
Stabilization of L‐PBF Ni50.7Ti49.3 under low‐cycle loading was investigated. Recoverable strain after cycling was dependent on the amount of applied load. Recovery ratio was 53.4% and 35.1% at intermediate and high load, respectively. The maximum total strain reached 10.3% at a high load of 1200 MPa.
Ondřej Červinek, Jakub Hurník, Miroslav Šmíd, Ondřej Zobač, Melanie Todt, Daniel Koutný   +5 more
wiley   +1 more source