= Neutron poisons
{wiki=Category:Neutron_poisons}
Neutron poisons, also known as neutron absorbers or neutron capture materials, are substances that absorb neutrons and thus reduce the reactivity of a nuclear reactor. They are used to control the rate of fission reactions within the reactor core by capturing free neutrons that are necessary for sustaining the chain reaction. Common neutron poisons include: 1. **Boron**: Often used in the form of boric acid, boron is a well-known neutron absorber.
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