English to Turkish Science Nuclear Eng/Sci

Reactivity control
The power output of the reactor is controlled by controlling how many neutrons are able to create more fissions.
Control rods that are made of a nuclear poison are used to absorb neutrons. Absorbing more neutrons in a control rod means that there are fewer neutrons available to cause fission, so pushing the control rod deeper into the reactor will reduce its power output, and extracting the control rod will increase it.
In some reactors, the coolant also acts as a neutron moderator. A moderator increases the power of the reactor by causing the fast neutrons that are released from fission to lose energy and become thermal neutrons. Thermal neutrons are more likely than fast neutrons to cause fission, so more neutron moderation means more power output from the reactors. If the coolant is a moderator, then temperature changes can affect the density of the coolant/moderator and therefore change power output. A higher temperature coolant would be less dense, and therefore a less effective moderator.
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Kaynak: http://en.wikipedia.org/wiki/Nuclear_reactor_technology
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SORU: Bağlamda geçen --neutron moderator-- Türkçeye nasıl çevrilebilir
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