Abstract
During the 355 nm laser-induced damage growth in fused silica, the distance of shock wave propagation decreases as the irradiation number increases. The dynamic image of the damage reveals that the growth of the damage cavity region is one of the primary reasons for the variation in shock wave propagation distance and structure. The growth coefficient and the depth-to-diameter ratio of the cavity are closely related to the decrease in shock wave propagation distance. Based on the Taylor–Sedov theory, this work presents a modified scaling that couples the growth coefficient with the depth-to-diameter ratio. The calculated results are in agreement with the experiment. It is a valuable complement to the study of shockwave propagation characteristics of damage growth.
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