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← ScienceWhich outcome arises when an overheated plasma etcher's cooling system fails?
A)Increased fluorocarbon radical formation rate✓
B)Decreased chamber pressure uniformity
C)Enhanced polymer deposition on walls
D)Reduced ion bombardment of substrate
💡 Explanation
Increased fluorocarbon radical formation is triggered because thermal decomposition causes C-F bond scission, yielding more radicals. Therefore, etching becomes excessively aggressive, rather than less uniform pressure or diminished ion bombardment, which are separate thermal effects.
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