Fig. 1. Typical experimental images obtained by the two-frame shadowgraphy system

Fig. 2. Flow chart of automatic acquisition algorithm for dynamic characteristics of laser-induced fused silicon exit surface particle ejection

Fig. 3. Particle recognition results. (a) Results of particle recognition after image denoising;(b) Particle recognition results without image denoising

Fig. 4. Characteristic curve of a Voronoi cell

Fig. 5. Particle matching results based on the layered Voronoi diagram, where the particles labeled with the same number are the same particles at 8 000 ns and 8 300 ns delays, respectively

Fig. 6. Particle matching results based on layered Voronoi diagram and elastic potential model

Fig. 7. Ratio of the number of correct matching to the total number of particle matching with diverse delays

Fig. 8. Estimation of particles instantaneous speed and size at diverse delay times

Fig. 9. Velocity vector field of particle ejection phenomenon, where the vector length represents the magnitude of velocity and the vector arrow represents the direction of velocity