Discrete and Continuous Models and Applied Computational ScienceDiscrete and Continuous Models and Applied Computational Science2658-46702658-7149Peoples' Friendship University of Russia named after Patrice Lumumba (RUDN University)2518410.22363/2658-4670-2020-28-4-398-405Research ArticleNumerical modeling of laser ablation of materialsAmirkhanovIlkizar V.<p>Candidate of Physical and Mathematical Sciences, Head of Sector “Scientific Division of Computational Physics”. Laboratory of Information Technologies</p>camir@jinr.ruSarkerNil R.<p>Candidate of Physical and Mathematical Sciences, Senior Researcher “Scientific Division of Computational Physics”. Laboratory of Information Technologies</p>sarker@jinr.ruSarkhadovIbrohim<p>Candidate of Physical and Mathematical Sciences, Senior Researcher “Scientific Division of Computational Physics”. Laboratory of Information Technologies</p>ibrohim@jinr.ruJoint Institute for Nuclear Research1512202028439840509122020Copyright © 2020, Amirkhanov I.V., Sarker N.R., Sarkhadov I.2020<p>In this paper, we report a numerical simulation of laser ablation of a material by ultrashort laser pulses. The thermal mechanism of laser ablation is described in terms of a one-dimensional nonstationary heat conduction equation in a coordinate system associated with a moving evaporation front. The laser action is taken into account through the functions of the source in the thermal conductivity equation that determine the coordinate and time dependence of the laser source. For a given dose of irradiation of the sample, the profiles of the sample temperature at different times, the dynamics of the displacement of the sample boundary due to evaporation, the velocity of this boundary, and the temperature of the sample at the moving boundary are obtained. The dependence of the maximum temperature on the sample surface and the thickness of the ablation layer on the radiation dose of the incident laser pulse is obtained. Numerical calculations were performed using the finite difference method. The obtained results agree with the results of other works obtained by their authors.</p>Numerical simulationablationpulsed lasersheat conduction equationчисленное моделированиеабляцияимпульсные лазерыуравнение теплопроводности[L. A. Zakharov and N. M. Bulgakov, “Numerical simulation of laser ablation of metals and polymers when exposed to pulses of infrared radiation: the effect of the initial temperature of the sample [Chislennoe modelirovanie lazernoj ablyacii metallov i polimerov pri vozdejstvii impul’sami infrakrasnogo izlucheniya: vliyanie nachal’noj temperatury obrazca],” Vestnik NGU. Seriya: Fizika, vol. 5, no. 1, pp. 39-47, 2010, in Russian.][S. I. Anisimov and B. S. Lukyanchuk, “Selected problems of laser ablation theory,” Phys. 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