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Nuclear reactor simulation
The first neutron was absorbed by the control rod. Please
press 'Add neutron' button to restart.
To continue press "Remove neutron" button, then "Replenish
fuel" button and then 'Add neutron' button to restart.
Help
In this simulation, the moderator and the coolant is
heavy water, which circulates around the fuel rods. Rollover the different
parts of the reactor to see what they do.
This simulation uses a simple fission model. For fission
to occur, a thermal (slow) neutron has to collide with a nucleus, which
then becomes unstable and decays into fast neutrons and fission fragments.
Before the fast neutrons can cause more fission events, they must first
be thermalised (slowed down) by the moderator.