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initially inside a nuclear reactor, uranium fuel such as uranium 235 is lowered inside the reactor and excess neutron is released, which is then absorbed by the uranium fuel and it atomically becomes unstable, so it splits into two smaller nuclei and more excess neutrons released. Again the same reaction occurs and splitting the nuclei into more smaller nuclei until it dies of or becomes atomically stable, the result of this is chain reaction.

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14y ago

The capture of a slow neutron. In most cases this leads to fission, in a small number it leads to formation of U-236

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Leo Szilard's 1934 patent GB630726

Richard Rhodes book "The Making of the Atomic Bomb"

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Q: What is the fission of U-235 nuclei initiated by?
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Where does the nuclear enengy come from?

It comes from the fission of certain nuclei, mostly U235 and Pu239. Every fission of a nucleus of an atom of these materials releases a certain amount of energy as heat.

In a reactor what is nuclear energy produced in?

It is produced in the fuel rods by fission of the U235 nuclei. Each fission produces a certain amount of heat, and this is transferred to the water or gas which is pumped past the fuel, by contact heat transfer.

What are fission fragments?

When an atomic nucleus fissions, it splits into smaller atomic nuclei. These smaller atomic nuclei are referred to as "fission fragments." The unstable nucleus of a radioactive element can fission (split) into smaller nuclei, i.e. those of lighter elements. This can also release other atomic particles, as well as energy. In nuclear power and atomic weapons, the fission process is initiated to release the nuclear energy. Natural fission is a much rarer occurrence than radioactive decay.

How is nuclear energy formed?

Some nuclei, notably U235 and Pu239, can be made to cause a chain reaction where neutrons are produced in nuclear fission, and propogate more subsequent neutrons so that a steady rate of fissions can be achieved. Each fission releases an amount of energy in the form of heat, which is then used in generating plant similar to that in a fossil fuelled power plant.

What is the process of the production of lighter nuclei from heavier nuclei called. Nuclear radiation nuclear force fusion or fission?

Nuclear fission

What is the splitting of the nuclei called?


The splitting of an atom's nucleus into two smaller nuclei is called?

The splitting of an atomic nucleus into smaller nuclei is called nuclear fission.

What is the splitting of an atoms nucleus into two smaller nuclei is called?

nuclear fission

What is the splitting of a nucleus into smaller nuclei?


What term is use to describe splitting a large atomic nucleus into smaller ones?

Nuclear fission is defined as splitting large nuclei into smaller ones.

What is the difference between fusion and fission atomic bombs?

Good question. A fusion bomb combines (fuses) light nuclei (hydrogen) into larger nuclei to get its energy. But it needs a fission bomb to start it. A fission bomb breaks up (fissions) heavy nuclei (uranium/plutonium) into smaller nuclei to get its energy.

Are the nuclei lighter after nuclear fission?

Yes, the results of nuclear fission include the production of lighter nuclei. The originating atom has split into smaller pieces.