please give the answer

Asked by sukhmaneet | 31st Aug, 2009, 09:37: AM

Expert Answer:

By slowing down the fast moving, high energy neutron to slower and low energy neutrons called thermal neutrons, the nuclear fission reaction can be made sustainable.

Hence moderators, such as heavy water, graphite are used as to slow down neutrons.

Regards,

Team,

TopperLearning.

Answered by  | 31st Aug, 2009, 02:00: PM

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