The energy of the fast neutrons emitted in a | vedclass

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Question

(A) In a nuclear fission reaction,such as the fission of $U^{235}$ by thermal neutrons,the neutrons released are known as fast neutrons.These neutrons

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$2 	ext{ MeV}$

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(A) In a nuclear fission reaction,such as the fission of $U^{235}$ by thermal neutrons,the neutrons released are known as fast neutrons.These neutrons possess high kinetic energy,which is typically around $2 	ext{ MeV}$.These fast neutrons must be slowed down to thermal energies (approximately $0.025 	ext{ eV}$) by a moderator to sustain the chain reaction.Therefore,the correct option is $A$.

The energy of the fast neutrons emitted in a nuclear fission reactor is approximately $\qquad$ .

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