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The function of heavy water in a nuclear reactor is to
- a)Slow down the speed of neutrons.
- b)Increase the speed of neutrons.
- c)Cool down the reactor.
- d)Stop the nuclear reaction.
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The function of heavy water in a nuclear reactor is toa)Slow down the ...
The heavy water is used as a moderator in a nuclear reactor. It is used to slow the neutrons being directed at the fissionable material, by means of the molecules of the moderator physicaly impacting the incoming neutrons and absorbing some of the kenetic energy they posses, thus slowing them down, in the same way that two billiard balls impacting each other would slow down the incoming one (or both if they were both moving). The reason that the neutrons have to be slowed is that most fissionable materials are more likely to absorb thermal neutrons (2.2km/s) than fast neutrons (14,000km/s).
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The function of heavy water in a nuclear reactor is toa)Slow down the speed of neutrons.b)Increase the speed of neutrons.c)Cool down the reactor.d)Stop the nuclear reaction.Correct answer is option 'A'. Can you explain this answer?
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