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← ScienceWhich outcome occurs when a high-powered laser ablates a copper target?
A)Plasma formation and material ejection✓
B)Increased target thermal conductivity
C)Decreased surface reflectance
D)Enhanced elastic deformation of surface
💡 Explanation
Plasma forms due to laser-induced breakdown; the mechanism is ionization of atoms ejected from the copper. This causes plasma and ejection, because the high energy density leads to rapid heating and vaporization, therefore ejecting material rather than simply changing its reflectance.
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