Results 81 to 90 of about 140,342 (289)

Handbook of Establishing and Maintaining Oxygen‐Free Atmospheres

Advanced Engineering Materials, EarlyView.
This study presents a practical framework for creating oxygen‐free atmospheres at ambient pressure using silane‐doped inert gases. The results show that ultra‐low oxygen levels and strongly reduced water content can be achieved through controlled silane dosing, drying systems, and sensor monitoring.
Sascha Jan Zimmermann, René Gustus, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +3 more
wiley   +1 more source

Novel Photocathode Lasers for the Hard- and Soft-X-ray Free Electron Lasers EuXFEL and FLASH [PDF]

EPJ Web of Conferences
We developed, constructed and commissioned novel photocathode lasers for the X-ray FELs European XFEL and FLASH which allow emittance optimization via beam shaping. Both facilities operate continuously with those lasers since Jan.
Mahnke Christoph, Li Chen, Ahmed Areeb, Akcaalan Oender, Brinker Frank, Chen Ye, Good James, Grosse-Wortmann Uwe, Guetg Marc, Ilia Denis, Kschuev Nick, Mohr Christian, Panuganti Harsha, Pressacco Federico, Schaper Lucas, Schulz Sebastian, Schreiber Siegfried, Tavakol Hamed, Tünnermann Henrik, Vidoli Caterina, Vogt Matthias, Winkelmann Lutz, Hartl Ingmar   +22 more
doaj   +1 more source

Oxide‐Free Titanium Coatings by Wire Arc Spraying in a Silane‐Doped Inert Atmosphere

Advanced Engineering Materials, EarlyView.
A silane‐doped argon atmosphere enables the production of oxide‐free titanium coatings via twin‐wire arc spraying at ambient pressure. This innovative approach eliminates residual oxygen, creating process conditions that prevent oxidation and nitride formation.
Manuel Rodriguez Diaz, Maik Szafarska, René Gustus, Kai Möhwald, Hans Jürgen Maier   +4 more
wiley   +1 more source

Visualizing aerosol-particle injection for diffractive-imaging experiments

, 2015
Delivering sub-micrometer particles to an intense x-ray focus is a crucial aspect of single-particle diffractive-imaging experiments at x-ray free-electron lasers.
Awel, Salah, Chapman, Henry N., Eckerskorn, Niko, Horke, Daniel A., Kirian, Richard A., Küpper, Jochen, Rode, Andrei V., Wiedorn, Max   +7 more
core   +1 more source

Tailored Hierarchical Porous Copper Architectures via Three Dimensional Printing and Pressure‐less Sintering for Next‐Generation Lithium‐Metal Batteries

Advanced Engineering Materials, EarlyView.
A hierarchical porous copper current collector is fabricated via three‐dimensional printing combined with pressureless sintering to stabilize lithium metal anodes. The interconnected architecture lowers local current density, guides uniform Li deposition within pores, and suppresses dendrite growth.
Alok Kumar Mishra, Mukul Shukla
wiley   +1 more source

Powerful terahertz free electron lasers with hybrid Bragg reflectors

Physical Review Special Topics. Accelerators and Beams, 2011
For the electron devices with oversized interaction space, the Bragg structures of different types are effective instruments for controlling and redistribution of the electromagnetic energy fluxes to provide a spatial coherence of radiation.
N. S. Ginzburg, A. M. Malkin, N. Yu. Peskov, A. S. Sergeev, V. Yu. Zaslavsky, I. V. Zotova   +5 more
doaj   +1 more source

Analysis of ultra-short bunches in free-electron lasers

New Journal of Physics, 2020
Free-electron lasers (FELs) operate at wavelengths from millimeter waves through hard x-rays. At x-ray wavelengths, FELs typically rely on self-amplified spontaneous emission (SASE).
L T Campbell, H P Freund, J R Henderson, B W J McNeil, P Traczykowski, P J M van der Slot   +5 more
doaj   +1 more source

VUV and X-ray coherent light with tunable polarization from single-pass free-electron lasers

, 2011
Tunable polarization over a wide spectral range is a required feature of light sources employed to investigate the properties of local symmetry in both condensed and low-density matter.
A. Kondratenko, A. Yariv, B. Diviacco, B. Mahieu, C. Spezzani, E. Allaria, E. Ferrari, E. Karantzoulis, G. De Ninno, G. Geloni, J. C. Sutherland, J. D. Jackson, M. Coreno, M. Vento, R. Walker   +14 more
core   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

On the Importance of Electron Beam Brightness in High Gain Free Electron Lasers

Photonics, 2015
Linear accelerators delivering high brightness electron beams are essential for driving short wavelength, high gain free-electron lasers (FELs). The FEL radiation output efficiency is often parametrized through the power gain length that relates FEL ...
Simone Di Mitri
doaj   +1 more source