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A Coulomb explosion theoretical model of femtosecond laser ablation materials

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Abstract

In this paper, a kinetic theory of Vlasov equation is proposed to depict electron and ion’s nonequilibrium transport processes in a femtosecond time scale. A Coulomb explosion model of femtosecond laser ablation of materials is proposed and numerically simulated. The mechanism of surface Coulomb explosion induced by self-consisted electric field and the impact of laser parameters on the ablation of materials are quantitatively analyzed. The ablation depths calculated by the model are in good agreement with the experimental results. It is shown that, the intensity of self-consisted electric field generated on the dielectric material’s surface is much greater than that generated on the metal or the semiconductor material’s surface, and Coulomb explosion ablation is more easily to occur on the dielectric material’s surface.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Southeast University, Nanjing, 210096, China

    XiaoHui Lin, HaiQuan Chen, ShuYun Jiang & ChiBin Zhang

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  1. XiaoHui Lin
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  2. HaiQuan Chen
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  3. ShuYun Jiang
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Correspondence to XiaoHui Lin.

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Lin, X., Chen, H., Jiang, S. et al. A Coulomb explosion theoretical model of femtosecond laser ablation materials. Sci. China Technol. Sci. 55, 694–701 (2012). https://doi.org/10.1007/s11431-011-4702-8

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  • DOI: https://doi.org/10.1007/s11431-011-4702-8

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