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← ScienceWhich consequence results when coolant lacks isotopic purification in CANDU reactors?
A)Loss of moderator neutron absorption
B)Tritium production rate declines
C)Gamma radiation intensity increases✓
D)Deuterium concentration reaches equilibrium
💡 Explanation
Gamma radiation increases when isotopic purification fails because neutron activation of deuterium yields tritium, which beta decays into helium-3, releasing gamma rays through inverse beta decay. Therefore, increased gamma emissions happen, rather than tritium production declining from isotopic imbalances.
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