Fast neutrons may most easily be slowed down by which one of the following methods?
(A) passing ... VIDEO
Fast neutrons may most easily be slowed down by which one of the following methods?
(A) passing them through a substance rich in hydrogen
\( P \)
(B) allowing them to collide elastically with heavy nuclei
W.
(C) using lead shielding
(D) passing them through an increasing potential gradient space
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