Question

Why is heavy water used in nuclear reactors?

Answer 1

• Heavy water $\left({\mathrm{D}}_2\mathrm{O}\right)$is used in nuclear reactors as a moderator to slow down the neutrons produced during the fission process.
• This also aids in the maintenance of the chain reaction, allowing the nuclear reactor to run effectively and consistently.
• Heavy water is an excellent moderator because it can work at high temperatures and has a low absorption probability for neutrons.
• Uranium in its native condition can be employed in the reactor with heavy water as the moderator.
• Heavy water is employed in nuclear reactors as a neutron moderator, slowing down neutron production and bringing stability to the fission reaction.