To speed up the neutrons. Change language English. Where does the energy come from in fusion reactions?
The other neutrons that were released by the collision would cause a nuclear explosion if moveable control rods did not absorb them. The chain reaction of splitting a nucleus Generating power from nuclear fuels Nuclear reactors use the heat from nuclear reactions in the nuclear fuel to boil water.
How is the chain reaction slowed in a nuclear reactor? Some atomic nuclei are unstable.
It is this energy that is harnessed in nuclear power stations. Why is the reactor filled with graphite? The control rods are neutron-absorbing rods, which are inserted into the spaces between the fuel rods, and are made from materials such as boron. Change language English. It is more likely to occur if: They can also be used to stop the reaction.
To increase the speed of the reaction.
This may not seem like a lot of energy but this energy is a result of the fusion of only four hydrogen nuclei. The splitting of a heavy nucleus. The nuclear fuel rods in a reactor can be radioactive for a very long time and have to be stored very carefully.
Reveal answer up. Nuclear fission Nuclear fission is the process by which energy is released when a large atom is hit by a neutron, becomes unstable and splits into two or more smaller pieces plus two or three neutrons.
Where does fusion occur naturally?