please give the answer
Asked by sukhmaneet | 31st Aug, 2009, 09:37: AM
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.
Answered by | 31st Aug, 2009, 02:00: PM
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