Laser ablation plume dynamics in nanoparticle synthesis

被引：18

作者：

Osipov, V. V. ^{[1
]}

Platonov, V. V. ^{[1
]}

Lisenkov, V. V. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Electrophys, Ural Branch, Ekaterinburg 620016, Russia

来源：

QUANTUM ELECTRONICS | 2009年 / 39卷 / 06期

基金：

俄罗斯基础研究基金会;

关键词：

laser plume; laser ablation; nanoparticles;

D O I：

10.1070/QE2009v039n06ABEH013981

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The dynamics of the plume ejected from the surface of solid targets (YSZ, Nd:YAG and graphite) by a CO2 laser pulse with a duration of similar to 500 mu s (at the 0.03 level), energy of 1.0 - 1.3 J and peak power of 6 - 7 kW have been studied using high-speed photography of the plume luminescence and shadow. The targets were used to produce nanopowders by laser evaporation. About 200 mu s after termination of the pulse, shadowgraph images of the plumes above the YSZ and Nd: YAG targets showed dark straight tracks produced by large particles. The formation of large (similar to 10 mu m) particles is tentatively attributed to cracking of the solidified melt at the bottom of the ablation crater. This is supported by the fact that no large particles are ejected from graphite, which sublimes without melting. Further support to this hypothesis is provided by numerical 3D modelling of melt cooling in craters produced by laser pulses of different shapes.

引用

页码：541 / 546

页数：6

共 9 条

[1]

[Anonymous], VZAIMODEISTVIE LAZER

[2]

DULEY WW, 1983, PROCESSING ANAL MAT

[3]

Gusev A.I., 2005, NANOMATERIALY NANOST

[4]

Muller E., 1995, Kona Powder Part, V13, P79, DOI [10.14356/kona.1995012, DOI 10.14356/KONA.1995012]

[5] Laser synthesis of nanopowders [J].

Osipov, V. V. ;

Kotov, Yu. A. ;

Ivanov, M. G. ;

Samatov, O. M. ;

Lisenkov, V. V. ;

Platonov, V. V. ;

Murzakaev, A. M. ;

Medvedev, A. I. ;

Azarkevich, E. I. .

LASER PHYSICS, 2006, 16 (01) :116-125

[6] Laser plume spectroscopy. 2. Graphite yttrium-stabilised and zirconium oxide targets [J].

Osipov, VV ;

Solomonov, VI ;

Platonov, VV ;

Snigireva, OA ;

Ivanov, MG ;

Lisenkov, VV .

QUANTUM ELECTRONICS, 2005, 35 (07) :633-637

[7] Highly efficient repetitively pulsed electric-discharge industrial CO2 laser [J].

Osipov, VV ;

Ivanov, MG ;

Lisenkov, VV ;

Platonov, VV .

QUANTUM ELECTRONICS, 2002, 32 (03) :253-259

[8]

OSIPOV VV, 2007, P 13 INT C METH AE 2

[9]

Vedenov A.A., 1985, FIZICHESKIE PROTSESS

← 1 →