What the first nucleus hit with to initiate the fission reaction? is?

1 Answer
SCooke
Apr 9, 2017

Neutrons

Explanation:

In a controlled nuclear fission reaction, the number of neutrons released is controlled to maintain the desired level of reaction.

Strictly speaking, “fission” is not necessarily initiated by a particle impact. It is the result of an unstable atom spontaneously splitting with the release of energetic neutrons (and other particles).

These are used in a controlled reactor to enhance the probability of other, more stable atoms becoming unstable due to the adsorption of the released energetic neutrons.

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