论文信息 - Mechanisms of melt droplets and solid-particle ejection from a target surface by pulsed laser action

Mechanisms of melt droplets and solid-particle ejection from a target surface by pulsed laser action

We suggest an explanation of the effect of melt droplets and solid particle ejection from a target surface under the impact of laser radiation with intensity 108–1010 W/cm2. We consider the capillary wave instabilities on the evaporating surface of melt, which lead to growth of large-scale surface structures and ejection of macroparticles. The instability increments and characteristic droplet sizes are determined. Conditions are found for droplet-free evaporation in terms of the dynamic pressure of evaporated matter.

V. I. Luchin | A. B. Brailovsky | S. V. Gaponov | A. Brailovsky | S. Gaponov

[1] J. Ready. DEVELOPMENT OF PLUME OF MATERIAL VAPORIZED BY GIANT‐PULSE LASER , 1963 .

[2] R. L. Johnson,et al. Laser Burnthrough Time Reduction Due to Tangential Airflow- An Interpolation Formula , 1974 .

[3] H. Palmer,et al. The hydrodynamic stability of rapidly evaporating liquids at reduced pressure , 1976, Journal of Fluid Mechanics.

[4] C. Knight. Theoretical Modeling of Rapid Surface Vaporization with Back Pressure , 1979 .

[5] A. Samokhin,et al. Effect of intensity modulation on radiation-induced melting and vaporization of solids , 1982 .

[6] Y. Saito,et al. Formation of Lead Clusters in Supersonic Nozzle Expansion: Effect of Nozzle Geometry , 1983 .

[7] Stepanov Ma. Materials processing by high-repetition-rate pulsed excimer and carbon dioxide lasers. , 1984 .

[8] L. Schultz,et al. Formation of YBaCuoxide thin films by pulsed laser deposition: A comparative study in the UV, visible and IR range , 1990 .

[9] A. Richter. Characteristic features of laser-produced plasmas for thin film deposition , 1990 .

[10] Illarion A. Dorofeev,et al. Formation of large-scale relief on a target surface under multiple-pulsed action of laser radiation , 1991, Other Conferences.

[11] H. Habermeier,et al. Y-Ba-Cu-O high temperature superconductor thin film preparation by pulsed laser deposition and RF sputtering: A comparative study , 1991 .