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← ScienceWithin a mass spectrometer operating near vacuum, which outcome reduces isotopic resolution?
A)Increased ion kinetic energy variance✓
B)Decreased magnetic field inhomogeneity
C)Minimized detector dead time effects
D)Optimized electron source filament current
💡 Explanation
Increased variance in kinetic energy among ions broadens their flight paths; therefore, isotopic resolution decreases because the arrival times overlap, rather than different isotopes being clearly separated during the ion separation mechanism.
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