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Slide 2

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Nuclear power reactors use a
reaction called nuclear fission. Two
isotopes in common use as nuclear
fuels are uranium-235 and
plutonium-239.…read more

Slide 3

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Fission is another word
for splitting. The process
of splitting a nucleus is
called nuclear fission.…read more

Slide 4

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Uranium or plutonium isotopes are
normally used as the fuel in nuclear
reactors, because their atoms have
relatively large nuclei that are easy to
split, especially when hit by neutrons.…read more

Slide 5

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When a uranium-235 or plutonium-239
nucleus is hit by a neutron, the
following happens:
the nucleus splits into two smaller
nuclei, which are radioactive
two or three more neutrons are
some energy is released…read more

Slide 6

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The additional neutrons released
may also hit other uranium or
plutonium nuclei and cause them
to split. Even more neutrons are
then released, which in turn can
split more nuclei. This is called a
chain reaction. The chain
reaction in nuclear reactors is
controlled to stop it going too
fast.…read more

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