Control rods made up of graphite or cadmium are inserted into a nuclear reactor to rev up the fission reaction
true or false
(may be broke/outdated!)
Control rods made up of graphite or cadmium are inserted into a nuclear reactor to rev up the fission reaction
true or false
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3 Responses
false
they slow it down by absorbing neutrons. The control rods are interspersed among the fuel (which can also be in rods) and are pulled out slightly to increase the reaction rate (and energy released) or pushed further in to slow it down.
im going with false. i think the rods get pulled out to make the reaction rev up.
You are talking about a moderator and weather or not that or the fissionable material is inserted depends on the reactor design. I recall reading about the fissionable material being in rods that insert into a moderating substance( water or even molten sodium metal) The moderator slows neutrons so they are absorbed when colliding with U238, yielding energy and Plutonium. For some reason this is referred to as “Breeding”, more fuel results.