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please give the answer

Asked by sukhmaneet 1st September 2009, 5:43 PM
Answered by 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 Expert 1st September 2009, 8:55 PM
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