When excess electrons collide with other nuclei.
Neutrons
It is a device where a controlled nuclear fission chain reaction occurs.
A nuclear chain reaction nuclear fission
The reason a nuclear chain reaction occurs is that one of the by products of a single reaction: the neutrons can start reactions of their own. So how do you stop a chain reaction? Stop these neutrons from causing any more reactions. This is done in nuclear reactors by placing control rods into the reactor core. These control rods are made of elements that can absorb the high energy neutrons without reacting themselves. Therefore, by moving these rods in and out of the reactor, the rate of reaction in a nuclear reactor can be easily controlled.
Nuclear fission
Neutrons
When excess electrons collide with other nuclei.
It is a device where a controlled nuclear fission chain reaction occurs.
It is a device where a controlled nuclear fission chain reaction occurs.
A nuclear chain reaction nuclear fission
Basically a chain reaction (nuclear or chemical) is a self sustaining auto-catalytic reaction.In a nuclear reactor it is a neutron chain reaction, where each neutron released in every fission event can trigger another fission event. In a nuclear reactor the excess neutrons must be disposed of, which is the purpose of the control rods so that the reaction can be kept at some desired constant rate.
Neutron particle is needed to begin nuclear chain reaction.
A nuclear chain reaction nuclear fission
In most cases neutrons are emitted and capable of maintaining a nuclear chain reaction
moderator
The proton-proton chain accounts for more than 98% of the fusion reactions in our Sun. The balance in the carbon-nitrogen-oxygen catalytic chain reaction.
In actuality, a spontaneous fission event begins a nuclear chain reaction. It kick starts a nuclear chain reaction. And a neutron from that fission will initiate another fission to continue and rev up that nuclear chain reaction.