11. The coolant liquid may act as a neutron absorber or as a neutron moderator . 12. If immersed in water, the uranium halves were subject to a neutron moderator effect. 13. This is done with a neutron moderator . 14. In the nuclear power industry, water can also be used as a neutron moderator . 15. One type uses solid graphite for the neutron moderator and ordinary water for the coolant. 16. Canada uses heavy water as a neutron moderator for the operation of the CANDU reactor design. 17. In this design, water is the working fluid and also serves as the neutron moderator . 18. Plutonium production fell off during 1946 due to swelling of the reactors'graphite neutron moderators . 19. To maximize the chance of fission, they needed a neutron moderator to slow the neutrons down. 20. This differentiates it from a heavy water reactor, which uses heavy water as a neutron moderator .
