Results 71 to 80 of about 582,709 (287)

Sound velocity measurement based on laser-induced micro-flyers

AIP Advances
The measurement of high-pressure sound velocity in solid materials is crucial for developing constitutive equations and equations of state for materials in extreme stress–strain rate conditions.
Z. He, Z. Fang, X. Huang, Z. Xie, J. Ye, J. Dong, H. Shu, P. Wang, G. Jia, F. Zhang, J. Xiong, B. Cheng, Y. Tu, J. Zhang, S. Fu   +14 more
doaj   +1 more source

Electron Acceleration in Underdense Plasmas Described with a Classical Effective Theory

, 2015
An effective theory of laser--plasma based particle acceleration is presented. Here we treated the plasma as a continuous medium with an index of refraction $n_{m}$ in which a single electron propagates.
Barna, Imre Ferenc, Pocsai, Mihály András, Varró, Sándor   +2 more
core   +1 more source

EBSD Study of Creep‐Induced Lattice Misorientation in MgO‐Particle‐Reinforced Austenitic Steel Composites

Advanced Engineering Materials, EarlyView.
Creep experiments at 900°C on coarse‐grained steel‐ceramic composites containing recycled magnesia reveal that higher ceramic volume fractions significantly enhance the creep resistance. Detailed EBSD investigations identify subgrain formation in the steel matrix as the dominant deformation mechanism.
Moritz Müller, Amaya Compart, Mahnaz Mehdizadehlima, Serhii Yaroshevskyi, Christos G. Aneziris, Horst Biermann, Anja Weidner   +6 more
wiley   +1 more source

Concept for using laser beams to measure electron density in plasmas [PDF]

, 1966
Concept is proposed for using laser beams as a means of measuring electron density at various points in flame or plasma exhausts. Measurement of the electron density is obtained by detecting reflected waves in the plasma that were activated by the ...
Longo, S. E.
core   +1 more source

Quasimonoenergetic electron beams produced by colliding cross-polarized laser pulses in underdense plasmas

, 2008
The interaction of two laser pulses in an underdense plasma has proven to be able to inject electrons in plasma waves, thus providing a stable and tunable source of electrons. Whereas previous works focused on the "beatwave" injection scheme in which two
Davoine, X., Faure, J., Lefebvre, E., Lifschitz, A., Malka, V., Rechatin, C.   +5 more
core   +3 more sources

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

Advanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +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

Tailored laser pulse chirp to maintain optimum radiation pressure acceleration of ions

, 2018
Ion beams generated with ultra-intense lasers-plasma accelerators hold promises to provide compact and affordable beams of relativistic ions. One of the most efficient acceleration setups was demonstrated to be direct acceleration by the laser's ...
Bulanov, S. S., Mackenroth, F.
core   +1 more source

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source

Investigation of optical properties of three dimensional reflectance rulers fabricated by size-controlled monodisperse polystyrene colloidal particles

Scientific Reports
This study is relevant to the design of the final activity of 3 dimensional photonic crystals (3D PCs), especially for applications where the reflectance range is a key parameter.
Meisam Gazmeh, Somayeh Karimi, Seyed Hassan Tavassoli   +2 more
doaj   +1 more source