Investigation of crater form and dimensions evolution during laser treating of materials

7th Conference on Low temperature Plasma in the Processes of Functional Coating Preparation

Ivanov, A. Yu^1 ; Kapytski, A.V.^2 ; Zharkiy, N.V.^1 ; Yerema, N.A.^1

Grodno State University, 22 Ozheshko Street, Grodno

230023, Belarus^1

Grodno State Medical University, 78 Gorky Street, Grodno

230023, Belarus^2

关键词: Acoustic fluctuations;    Computer modeling;    Irradiated materials;    Laser impulse;    Pulse laser radiation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/669/1/012025/pdf
DOI  :  10.1088/1742-6596/669/1/012025

来源: IOP

【 摘 要 】

Acoustic emission of a zone of the destruction formed during influence of pulse laser radiation on a surface of metal is considered. Dependence of the time form of acoustic fluctuations on parameters of an irradiated material and the law of increase in depth of a crater was estimated. It is revealed, that at action on a surface of the copper sample of a laser impulse duration ∼ 20 μs time of growth of a zone of destruction makes approximately 40 μs. It is shown also that having detected a diffraction picture appearing on incidence of SHF-radiation on the surface of solid and having achieved during the experiment the best coincidence of the experimental and calculated using the computer model data one can define the character of the zone of destruction on the surface of structure being under treatment relief.