Equation of state for simulation of nanosecond laser ablation aluminium in water and air

2nd International School and Conference Saint-Petersburg OPEN on Optoelectronics, Photonics, Engineering and Nanostructures

Davydov, R.^1 ; Antonov, V.^1 ; Kalinin, N.^1

Peter the Great St.Petersburg Polytechnic University, Saint Petersburg, Russia^1

关键词: Ablation depth;    Equation of state;    High energy densities;    High pressure;    Nanosecond laser ablation;    Normal condition;    Physical process;    Semiempirical equation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/643/1/012107/pdf
DOI  :  10.1088/1742-6596/643/1/012107

来源: IOP

【 摘 要 】

To analyze the physical processes at high energy densities, when laser is used, an adequate description the thermodynamic property of matter over a broad region of states including the normal conditions and plasma at high pressures and temperatures is required. For describing the thermodynamic properties of metals in nanoparticles production using laser ablation a semi-empirical equation of state model is proposed. To verify this model, an equation of state of aluminum was constructed. Using this equation was calculated ablation depths and crater profile for aluminum and compared with experimental data. Received results are in a good match with experiment.