Results 31 to 40 of about 32,618 (300)

Characterization of RF System for MIR/THz Free Electron Lasers at Chiang Mai University

Particles
The establishment of the mid-infrared and terahertz free-electron laser (MIR/THz FEL) facility is ongoing at the PBP-CMU Electron Linac Laboratory (PCELL) in Chiang Mai University.
Pitchayapak Kitisri, Jatuporn Saisut, Sakhorn Rimjaem   +2 more
doaj   +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

The Concept and Measurements of an Adjustable Holder for Large Magnets Applicable for a THz Undulator Working in Superradiant Emission

Applied Sciences
The main aim of this study is the concept of the magnet holder for the THz undulator utilized in the PolFEL superradiant light source. To achieve maximum flux at high K values (radiation frequencies ranging from 0.5 THz to 5 THz, and K values exceeding 3)
Paweł J. Romanowicz, Jarosław Wiechecki, Daniel Ziemiański, Robert Nietubyć, Paweł Krawczyk   +4 more
doaj   +1 more source

Physics of nanocoulomb-class electron beams in laser-plasma wakefields

, 2020
Laser wakefield acceleration (LWFA) and its particle-driven counterpart, plasma wakefield acceleration (PWFA), are commonly treated as separate, though related branches of high-gradient plasma-based acceleration. However, novel proposed schemes are increasingly residing at the interface of both concepts where the understanding of their interplay ...
Götzfried, J., Döpp, A., Gilljohann, M., Foerster, M., Ding, H., Schindler, S., Schilling, G., Buck, A., Veisz, L., Karsch, S.   +9 more
openaire   +2 more sources

Is an Apple an Orange? A Large Language Model Benchmark for Candidate Term Extraction and Subclass Decisions Against Upper Ontologies in Engineering and Materials Science

Advanced Engineering Materials, EarlyView.
Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch, Maximilian Holland, Klaus Drechsler, Johannes Schilp   +3 more
wiley   +1 more source

Method for the use of polymer beads as dosimeters for low-energy electron irradiation

Frontiers in Physics
In this study, a novel bead-based dosimetry system was developed. This approach uses suspended polymethyl methacrylate beads, which experience a dose-dependent change in fluorescence intensities.
Joana Kira Besecke, Joana Kira Besecke, Joana Kira Besecke, Lysann Kenner, André Poremba, Jessy Schönfelder, Jessy Schönfelder, Tobias Teichmann, Martin Thoma, Martin Thoma, Thomas Grunwald, Thomas Grunwald, Elizabeth von Hauff, Elizabeth von Hauff, Ulla König, Björn Poppe, Simone Schopf, Simone Schopf   +17 more
doaj   +1 more source

Dependence of the damage in optical metal/dielectric coatings on the energy of ions in irradiation experiments for space qualification

Scientific Reports, 2021
Terrestrial accelerator facilities can generate ion beams which enable the testing of the resistance of materials and thin film coatings to be used in the space environment. In this work, a $$\hbox {TiO}_2$$ TiO 2 /Al bi-layer coating has been irradiated
Maria G. Pelizzo, Alain J. Corso, Giovanni Santi, René Hübner, Denis Garoli, Dominic Doyle, Philip Lubin, Alexander N. Cohen, Jacob Erlikhman, Giulio Favaro, Marco Bazzan, Jon Drobny, Davide Curreli, Maxim Umansky   +13 more
doaj   +1 more source

Influence of Ion Implantation on the Wear and Lifetime of Circular Saw Blades in Industrial Production of Wooden Door Frames

Applied Sciences, 2022
The paper presents the effect of nitrogen ion implantation on tool wear and tool life during the sawing of wood-based materials in the industrial production of door frames. The circular saw blades used in machining had WC-Co carbide teeth. Saw teeth were
Jacek Wilkowski, Marek Barlak, Zdzisław Kwidziński, Adam Wilczyński, Piotr Filipczuk, Marta Pędzik, Marcin Drewczyński, Jerzy Zagórski, Bogdan Staszkiewicz, Tomasz Rogoziński   +9 more
doaj   +1 more source

Ion stopping in dense plasma target for high energy density physics [PDF]

, 2010
The basic physics of nonrelativistic and electromagnetic ion stopping in hot and ionized plasma targets is thoroughly updated. Corresponding projectile-target interactions involve enhanced projectile ionization and coupling with target free electrons ...
Hasegawa, Jun, Sharkov, Boris Y., Deutsch, Claude, Chabot, Marin, Golubev, Alexey A., Ogawa, Masao, Bimbot, René, Jacoby, Joachim, Couillaud, Christophe, Mintsev, Victor, Della-Negra, Serge, Hoffmann, Dieter H. H., Wahl, H., Weyrich, Karin, Gardes, Daniel, Fleurier, Claude, Fertman, Alexander, Maynard, Gilles, Rivet, Marie-France, Tahir, Naeem Ahmad, Rosmej, Olga N., Fortov, Vladimir E., Oguri, Yoshiyuki   +22 more
core  

Negative ion beam plasma characterization by retarding field energy analyzer [PDF]

, 2022
NIO1 (Negative Ion Optimization 1) is a source of negative hydrogen beams, located at RFX facility in Padua. Its purpose is to analyze the optimal configurations for negative ion beam production and propagation.
Manaigo, Filippo
core