Why is carbon better than lead as a neutron absorber in nuclear reactors?
A)Carbon produces the high energy, high speed neutrons necessary for maintaining the nuclear chain reaction.
B)Carbon slows down the neutrons making them more effective in stimulating the nuclear chain reaction.
C)Lead slows down the neutrons making them less effective in stimulating the nuclear chain reaction.

Question

Quizplus · Accepted Answer

Carbon, in the form of graphite, acts as a moderator in nuclear reactors by slowing down neutrons, making them more effective in sustaining the nuclear chain reaction.

Why Is Carbon Better Than Lead as a Neutron Absorber