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← ScienceWhich constraint affects radioisotope thermoelectric generator (RTG) longevity?
A)Daughter isotope helium production✓
B)Oxidation rate of the cladding
C)Coolant fluid pump cavitation
D)Neutron absorption by fuel rods
💡 Explanation
Helium production increases internal pressure within the RTG because alpha decay of its radioisotope fuel produces helium as a byproduct; therefore, sufficient venting or robust containment are required, rather than oxidation, coolant issues, or fuel rod absorption.
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