Modeling of Surface Structure Formation after Laser Irradiation
Advanced Material Research 2011
J. Kaupužs, Sh.E. Guseinov, J. Rimshans, Artūrs Medvids

The Stefan problem in a semi-infinite media under laser irradiation is consideres. It is related to the melting and solodification processes, resulting in certain surface structure after the solidification. A simple model, as well as a more sophisticated one is proposed to describe this process. The latter model allows us to calsulate the surface profile by solving a system of two nonlinear differential equations, if the shape of the solid-liquid interface is known. It has to be found as a solution of two-phases Stefan problem. The results of example calculations by the fourth-order Runge-Kutte method are presented, asuming that the solid-liquid interface has a parabolic shape. The calculated crossection of the surface structure shows a characteristic cone in the cernet, in agreement with experimental observations.


Atslēgas vārdi
Stefan problem, Greens functions, laser irradiation, surface structure, diferential equations, Runge-Kutta method, Euler lagrange equation
DOI
10.4028/www.scientific.net/AMR.222.90
Hipersaite
https://www.scientific.net/AMR.222.90

Kaupužs, J., Guseinov, S., Rimshans, J., Medvids, A. Modeling of Surface Structure Formation after Laser Irradiation. Advanced Material Research, 2011, Vol. 222, 90.-93.lpp. ISSN 1662-8985. Pieejams: doi:10.4028/www.scientific.net/AMR.222.90

Publikācijas valoda
English (en)
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