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How can you slow down a fast neutron?

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+1 vote
in Fluid Mechanics by (118k points)
How can you slow down a fast neutron?

(a) Applying an electric field

(b) Using shield

(c) Elastic collision

(d) Heavy water

I got this question in final exam.

This intriguing question originated from Kinetic Energy Correction and Momentum Correction Factors topic in portion Viscous Flow & Turbulent Flow of Fluid Mechanics

1 Answer

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Best answer
Right answer is (d) Heavy water

The explanation: The fast neutrons are converted to thermal neutrons when they are passed through heavy water(D2O). The key factor for the neutrons to slow down are its atomic number. The velocity of the fast neutrons decreases with a few collisions.

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