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Which mechanism initiates material ablation during pulsed laser surface processing?

A)Inverse Bremsstrahlung laser energy absorption
B)Raman scattering inducing vibrational excitation
C)Brillouin scattering causing acoustic phonons production
D)Forced convective cooling exceeding input energy

💡 Explanation

Inverse Bremsstrahlung absorption heats electrons in the material, causing rapid thermalization because unbound electrons oscillating within the laser’s electric field collide, therefore, it initiates ablation, rather than other possibilities for energy scattering.

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