Dynamics and spectroscopy of the laser plume from solid targets / Osipov V. V.,Solomonov V. I.,Platonov V. V.,Snigireva O. A.,Lisenkov V. V.,Ivanov M. G. // LASER PHYSICS. - 2006. - V. 16, l. 1. - P. 134-145.

ISSN/EISSN:

1054-660X / нет данных

Type:

Article

Abstract:

The dynamics and the spectral kinetic characteristics of the plume emerging in the vicinity of graphite targets, pressed pellets consisting of zirconium oxide powder stabilized with yttrium (YSZ) and yttrium-aluminum oxides with neodymium (YAO:Nd), and single-crystal YAG:Cr are studied. The targets are irradiated in air at room temperature using a repetitively pulsed CO2 laser with a wavelength of 10.6 mu m, a peak power of up to 9 kW, a pulse energy of 1.69 J, and a pulse duration of 330 mu s at a level of 0.1. The plume propagates normally to the target surface at an angle of 45 relative to the laser radiation. The spectral kinetic characteristics of the plume luminescence are discretely measured along the entire length. It is demonstrated that the plumes of all targets (except for the single-crystal YAG:Cr) represent the flows of a weakly nonequilibrium gas plasma with a temperature of 10 kK (graphite) and 3.1-4.7 kK (YSZ and YAO:Nd pressed pellets). The plume size is determined by the peak power of the laser pulse. The luminescence of the two-atom radicals (C-2 in graphite; ZrO and YO in YSZ; and YO, AlO, and NdO in YAO:Nd) dominates in all of the plumes. A single radical (YO) and the spectral lines of atoms and atomic ions are observed in the YAG:Cr plume. A relatively high temperature of the graphite plume is maintained owing to the energy of the exothermic reaction involving the association of carbon atoms and the energy of the vibrationally excited molecules resulting from this reaction.

Author keywords:

WALL CARBON NANOTUBES; CO2-LASER; ABLATION; EVAPORATION; GRAPHITE; GROWTH; PULSE

DOI:

10.1134/S1054660X06010130

Web of Science ID:

ISI:000243745400013

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JAN
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Keywords-Plus	WALL CARBON NANOTUBES; CO2-LASER; ABLATION; EVAPORATION; GRAPHITE; GROWTH; PULSE
Research-Areas	Optics; Physics
Web-of-Science-Categories	Optics; Physics, Applied
Author-Email	plasma@iep.uran.ru
ResearcherID-Numbers	Ivanov, Maxim/G-3579-2014
ORCID-Numbers	Ivanov, Maxim/0000-0003-2777-8421
Number-of-Cited-References	18
Usage-Count-Since-2013	5
Journal-ISO	Laser Phys.
Doc-Delivery-Number	129QV