Effective moderators are those materials which contain
A. Light weight atoms
B. Heavy weight atoms
C. Critical atoms
D. Zero weight atoms
Answer: Option A
Solution(By Examveda Team)
Moderators are made from materials with light nuclei which do not absorb the neutrons but rather slow them down by a series of collisions.Carbon in the form of graphite is a material used for moderators as is heavy water which is Deuterium an isotope of Hydrogen with an atomic mass of 2 bonded to Oxygen.
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