Laser-matter interaction and plasma dynamic during laser shock processing determine the key parameters such as laser shock wave pressure and evolution during laser shock processing (LSP) process. A first-principle based model is critically important for elucidating the underlying mechanism and process optimization of the LSP process. The current study focuses on developing a theoretical model for the fundamental understanding of laser-matter interaction and plasma dynamics. The key physical parameters, such as electron and ion temperature, plasma density and shockwave pressure are predicted by this model and validated by experimental results.

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