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← ScienceWhich outcome occurs when a pulsed laser exceeds the ablation threshold of a material?
A)Material undergoes localized phase explosion✓
B)Increased specular reflection occurs
C)Laser induces photochemical degradation
D)Material's grain boundaries strengthen
💡 Explanation
Localized phase explosion occurs because pulsed lasers deliver energy faster than thermal diffusion. The Rapid heating induces explosive vaporization, rather than gradual melting, therefore material is removed rapidly; grain boundaries do not strengthen.
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