Results 281 to 290 of about 164,990 (313)
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Laser-Pulsed Plasma Chemistry: Surface Oxidation of Niobium
MRS Proceedings, 1982ABSTRACTLaser irradiation of a solid surface under an oxidizing ambient gas can activate localized, heterogeneous chemical reactions which modify the surface. Under suitable conditions, the laser initiates a reactive plasma near the gas/solid interface.
R.F. Marks, R.A. Pollak, Ph. Avouris
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Femtosecond laser-induced electronic plasma at metal surface
Applied Physics Letters, 2008We develop a theoretical analysis to model plasma initiation at the early stage of femtosecond laser irradiation of metal surfaces. The calculation reveals that there is a threshold intensity for the formation of a microscale electronic plasma at the laser-irradidated metal surface.
Zhaoyang Chen, Samuel S. Mao
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Surface waves in laser-produced plasma double layers
IEEE Transactions on Plasma Science, 1989The surface-tension pressure for a charged double layer is calculated. This result is used to derive the dispersion relation for surface waves. The stability criterion defines stable surface waves with wavelength lambda /sub sw/ >
S. Eliezer, H. Hora
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Investigation of laser-produced plasmas from metal-surfaces
Plasma Physics, 1970The output beam of a Ruby Giant Pulse Laser (30 nsec halfwidth, up to 100 MW peak power) was focussed onto the surface of aluminium and copper-targets, which were cleaned by heating them to 500 degrees C at 10-7 torr. The evaporated ions and electrons were detected at a distance of 170cm away from the target, after having passed some retarding grids ...
W Demtroder, W Jantz
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Control of the surface plasma during pulsed laser cutting
SPIE Proceedings, 1997During pulsed laser cutting of aluminum with a repetitively pulsed carbon-dioxide laser a strong correlation between quality of the cut judged by the burr height and electron density of the laser induced plasma on the surface and in the kerf occurs. The electron density is supervised by an absorption experiment and can be adjusted by the pulse duration.
Ulrich Bielesch +3 more
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Investigation Of Plasma Critical Surface Rippling By Harmonics Generation In Laser Plasmas
AIP Conference Proceedings, 2006Experiments were carried out by a tightly focused, prepulse‐free hybrid KrF excimer‐dye laser system (700fs pulse duration, 248nm wavelength, 15mJ pulse energy). Intense 2ω, 3ω and near threshold 4ω were generated in laser plasmas on solid surfaces for p‐ and s‐polarized 1.5⋅1017 W/cm2 radiation intensity.
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The Formation of Ring Shaped Laser Plasmas on a Metal Surface
AIP Conference Proceedings, 2006A method to produce ring plasmas on a metal surface is presented. The ring plasma is produced by focusing a laser pulse into an annular shape. This is achieved by using a combination of a converging lens and an axicon. The axicon is a rotationally symmetric prism.
Felipe Veloso +5 more
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Surface ion implantation induced by laser-generated plasmas
Radiation Effects and Defects in Solids, 2010Surface ion implantation induced by laser-generated plasmas was investigated using the PALS Prague laser facilities.
L. Giuffrida +4 more
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Plasmas and traces on solid surfaces by ruby laser
2001Snop rubinskog lasera fokusiran je na ravne metalne površine. Opaženi su i analizirani spektari visoko ioniziranih atoma Mg i Al.
Henč-Bartolić, Višnja +2 more
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Interaction of a laser-produced plasma with a solid surface
Physical Review A, 1985, Mazing +3 more
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