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Which risk increases during pulsed laser deposition with NaCl?

A)Substrate contamination via Coulomb explosion
B)Sputtering due to metastable excitation
C)Thermal damage via Auger recombination
D)Quenching via intersystem crossing

💡 Explanation

Substrate contamination increases because the ionic bond between Na and Cl breaks during laser ablation, causing the Coulomb explosion mechanism. This ejects high-energy ions onto the substrate, therefore resulting in film contamination rather than uniform deposition.

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