Multiple choice

The neutron moderator materials are found in ___________.

  1. thermal reactors

  2. fast neutron reactors

  3. pressurized heavy water reactor (PHWR)

  4. molten salt reactor
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A Correct answer
Explanation

Thermal reactors use slowed or thermal neutrons. Almost all current reactors are of this type. These contain neutron moderator materials that slow neutrons until their neutron temperature is thermalised, that is, until their kinetic energy approaches the average kinetic energy of the surrounding particles.

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