Results 31 to 40 of about 6,746,161 (288)
Pepper-pot emittance measurement of laser-plasma wakefield accelerated electrons [PDF]
, 2009 The transverse emittance is an important parameter governing the brightness of an electron beam. Here we present the first pepper-pot measurement of the transverse emittance for a mono-energetic electron beam from a laser-plasma wakefield accelerator ...
Shanks, R. P. +11 more
core +4 more sources
An overview of laser surface modification of die steels [PDF]
, 2008 In recent years, surface modification using advanced heat source like laser has been replacing the conventional methods to produce amorphous microstructure via rapid solidification.
Brabazon, Dermot +3 more
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Possible explanations for different surface quality in laser cutting with 1 micron and 10 microns beams [PDF]
, 2012 In laser cutting of thick steel sheets, quality difference is observed between cut surfaces obtained with 1 micron and 10 micron laser beams. This paper investigates physical mechanisms for this interesting and important problem of the wavelength ...
Remy Fabbro +3 more
core +1 more source
Controlled biopolymer roughness induced by plasma and excimer laser treatment
eXPRESS Polymer Letters, 2013 A new method for biopolymer poly-L-lactic-acid (PLLA) surface nanostructuring with surface plasmon resonance appearance is proposed. The motivation of this work is to determine optimal conditions for rough or flat biopolymer surface which may find broad ...
P. Slepicka +2 more
doaj +1 more source
Excitation of surface plasma waves and fast electron generation in relativistic laser–plasma interaction [PDF]
Scientific Reports, 2020 AbstractThe excitation of surface plasma waves (SPW) by an intense short laser pulse is a useful tool to enhance the laser absorption and the electron heating in the target. In this work, the influence of the transverse laser profile and the pulse duration used to excited SPW is investigated from Fluid and 2D Particle-in-Cell simulations.
Raynaud, Michèle +2 more
openaire +4 more sources
Analysis of hybrid Nd:Yag laser-MAG arc welding processes. [PDF]
, 2011 In the hybrid laser-arc welding process, a laser beam and an electric arc are coupled in order to combine the advantages of both processes: high welding speed, low thermal load and high depth penetration thanks to the laser; less demanding on joint ...
F. Coste +9 more
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Research, 2018 Femtosecond laser-induced surface structures upon multiple pulses irradiation are strongly correlated with the pulse number, which in turn significantly affects successive laser-material interactions.
Qingsong Wang +9 more
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Impacts of Ambient and Ablation Plasmas on Short- and Ultrashort-Pulse Laser Processing of Surfaces
Micromachines, 2014 In spite of the fact that more than five decades have passed since the invention of laser, some topics of laser-matter interaction still remain incompletely studied. One of such topics is plasma impact on the overall phenomenon of the interaction and its
Nadezhda M. Bulgakova +7 more
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Influence of a pulsed laser regime on surface finish induced by thedirect metal deposition process on a Ti64 alloy [PDF]
, 2014 tThe direct metal deposition (DMD) laser technique is a free-form metal deposition process, which allowsgenerating a prototype or small series of near net-shape structures.
GORNY, Cyril +7 more
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Applied Sciences, 2018 The laser-induced damage threshold of optics is an issue of essential importance in high-power laser applications. However, the complex and partially interacting mechanisms as well as the underlying reasons for laser damage of glass surfaces are not yet ...
Christoph Gerhard, Marco Stappenbeck
doaj +1 more source