Dynamics and spectroscopy of the laser plume and generation of nanoparticles / Osipov V. V.,Solomonov V. I.,Platonov V. V.,Snigireva O. A.,Lisenkov V. V.,Ivanov M. G. // . - 2007. - V. 6606, l. .

ISSN/EISSN:

0277-786X / нет данных

Type:

Proceedings Paper

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 of garnet stock with neodymium. (YAG:Nd) are studied. The targets are irradiated in air at room temperature using a repetitively pulsed CO2 laser with a wavelength of 10.6mm, a peak power of up to 9 kW, a pulse energy of up to 1.69 J, and a pulse duration of 330ms at a level of 0.1. The plume propagates normally to the target surface at an angle of 45 degrees 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 represent the ``ows of a weakly nonequilibrium gas plasma with a temperature of 10 kK (graphite) and 3.1...4.7 kK (YSZ and YAG: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 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. The dynamics of plasma plume was studied by luminescence imaging and shadowgraphy.

Author keywords:

CO2-laser ablation; laser plume; nanoparticles DISCHARGE

DOI:

10.1117/12.729589

Web of Science ID:

ISI:000246689900021

Соавторы в МНС:

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Другие поля

Поле	Значение
Editor	Dumitras, DC and Dinescu, M and Konov, VI
Booktitle	ADVANCED LASER TECHNOLOGIES 2006
Series	Proceedings of SPIE
Note	14th International Conference on Advanced Laser Technologies, Brasov, ROMANIA, SEP 08-12, 2006
Organization	Minist Educ \& Res; SPIE Russia Chapter; Russian Minist Ind, Sci \& Technol; Russian Fdn Basic Res; Natl Inst Laser, Plasma \& Radiat Phys; Transilvania Univ Brasov; Gen Phys Inst; Gen Phys Inst, Ctr Laser Technol \& Mat Sci; Moscow State Univ, Int Laser Ctr
Publisher	SPIE-INT SOC OPTICAL ENGINEERING
Address	1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
Language	English
Article-Number	66060M
ISBN	978-0-8194-6744-7
Keywords-Plus	DISCHARGE
Research-Areas	Optics
Web-of-Science-Categories	Optics
Author-Email	max@iep.uran.ru
ResearcherID-Numbers	Ivanov, Maxim/G-3579-2014
ORCID-Numbers	Ivanov, Maxim/0000-0003-2777-8421
Funding-Acknowledgement	INTAS {[}03-51-3332]
Funding-Text	This work was supported by grant from an INTAS grant (Project No 03-51-3332).
Number-of-Cited-References	6
Usage-Count-Since-2013	2
Doc-Delivery-Number	BGG67