Results 51 to 60 of about 29,138 (310)

Efficiency and beam quality for positron acceleration in loaded plasma wakefields

Physical Review Research, 2021
Accelerating particles to high energies in plasma wakefields is considered to be a promising technique with good energy efficiency and high gradient. While important progress has been made in plasma-based electron acceleration, positron acceleration in ...
C. S. Hue, G. J. Cao, I. A. Andriyash, A. Knetsch, M. J. Hogan, E. Adli, S. Gessner, S. Corde   +7 more
doaj   +1 more source

Microstructure, Thermal Transport, and Dry‐Sliding Tribology of Powder‐Metallurgy Al7075 Composites Reinforced With Sol–Gel‐Derived ZnO–rGO Hybrid Nanoparticles

Advanced Engineering Materials, EarlyView.
Sol–gel‐derived ZnO–rGO hybrid nanoparticles enable Al7075 powder‐metallurgy composites to achieve concurrent gains in hardness and thermal conductivity while markedly lowering friction and wear. The hybrid architecture couples ZnO‐based load support with rGO‐assisted lamellar sliding and heat spreading, revealing a promising route toward lightweight ...
Bunyamin Aksakal, Cevher Kursat Macit, Merve Ayık, Hakan Tutumlu   +3 more
wiley   +1 more source

Design, simulation and experiment of a cusp electron beam for millimeter wave gyro-devices

, 2009
The design, simulation and experiment of a thermionic cusp electron gun that is to be used for millimeter wave generation will be presented. A cusp gun uses a non-adiabatic magnetic field reversal to obtain azimuthal motion on an electron beam resulting ...
Phelps, Alan, Cross, Adrian, He, Wenlong, Donaldson, Craig, Ronald, Kevin, Li, Fengping   +5 more
core   +1 more source

A compact, lightweight, variable-energy cyclotron for conventional and FLASH ion beam radiotherapy

Frontiers in Oncology
IntroductionThe advantage of ion beam radiotherapy for cancer lies in its low dose proximal and distal to the tumor, owed to an energy-dependent depth-dose profile, the Bragg-peak. However, conventional techniques to achieve different energies often rely
D. Winklehner, J. V. Minervini, L. Bromberg, E. Forton, J. Mandrillon, P. C. Michael, A. Radovinsky   +6 more
doaj   +1 more source

Emittance growth due to misalignment in multistage laser-plasma accelerators

Physical Review Accelerators and Beams, 2019
Beam degradation is examined in a laser-plasma accelerator stage with a parabolic plasma channel when the laser pulse and/or the electron beam enters the channel off axis.
Maxence Thévenet, Rémi Lehe, Carl B. Schroeder, Carlo Benedetti, Jean-Luc Vay, Eric Esarey, Wim P. Leemans   +6 more
doaj   +1 more source

Intermediate Resistive State in Wafer‐Scale Vertical MoS2 Memristors Through Lateral Silver Filament Growth for Artificial Synapse Applications

Advanced Functional Materials, EarlyView.
In MOCVD MoS2 memristors, a current compliance‐regulated Ag filament mechanism is revealed. The filament ruptures spontaneously during volatile switching, while subsequent growth proceeds vertically through the MoS2 layers and then laterally along the van der Waals gaps during nonvolatile switching.
Yuan Fa, Milan Buttberg, Ke Ran, Rana Walied Ahmad, Dennis Braun, Lukas Völkel, Jimin Lee, Sofía Cruces, Bart Macco, Bárbara Canto, Holger Lerch, Thorsten Wahlbrink, Holger Kalisch, Michael Heuken, Andrei Vescan, Joachim Mayer, Zhenxing Wang, Ilia Valov, Stephan Menzel, Max C. Lemme   +19 more
wiley   +1 more source

The evolution of electron overdensities in magnetic fields [PDF]

, 2009
When a neutral gas impinges on a stationary magnetized plasma an enhancement in the ionization rate occurs when the neutrals exceed a threshold velocity. This is commonly known as the critical ionization velocity effect.
MacLachlan, C.S., Diver, D.A., Potts, H.E.   +2 more
core   +1 more source

Improvement of Biological Properties of Natural Hemostatic Agent by Plasma Technology

MATEC Web of Conferences, 2018
The aim of this study was to evaluate the effect of non-thermal plasma treatment on the biological properties of a natural hemostatic agent. The results show that plasma treatment can enhance the biodegradability property of the hemostatic agent by ...
Wattanutchariya Wassanai, Boonyawan Dheerawan, Jaifu Jureeporn   +2 more
doaj   +1 more source

Femtosecond electron microscopy of relativistic electron bunches

Light: Science & Applications, 2023
The development of plasma-based accelerators has enabled the generation of very high brightness electron bunches of femtosecond duration, micrometer size and ultralow emittance, crucial for emerging applications including ultrafast detection in material ...
Yang Wan, Sheroy Tata, Omri Seemann, Eitan Y. Levine, Slava Smartsev, Eyal Kroupp, Victor Malka   +6 more
doaj   +1 more source

TORBEAM 2.0, a paraxial beam tracing code for electron-cyclotron beams in fusion plasmas for extended physics applications [PDF]

Computer Physics Communications, 2018
The paraxial WKB code TORBEAM (Poli, 2001) is widely used for the description of electron-cyclotron waves in fusion plasmas, retaining diffraction effects through the solution of a set of ordinary differential equations. With respect to its original form, the code has undergone significant transformations and extensions, in terms of both the physical ...
Emanuele Poli, A. Bock, M. Lochbrunner, Omar Maj, M. Reich, Antti Snicker, Andreas Stegmeir, Francesco A. Volpe, Nicola Bertelli, Roberto Bilato, G. D. Conway, Daniela Farina, Federico Felici, Lorenzo Figini, Rainer Fischer, Cristian Galperti, T. Happel, Y. R. Lin-Liu, N. B. Marushchenko, U. Mszanowski, F. M. Poli, J. Stober, E. Westerhof, R. Zille, A. G. Peeters, G. V. Pereverzev   +25 more
openaire   +5 more sources