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A chain reaction has products or byproducts that cause the reaction to continue.
One example is a state of nuclear critical mass, in which an atom of u-235 decays to produce fast neutrons (along with other fission fragments), which crash into other u-235 atoms, which release more neutrons. The number of neutrons in the environment increases, and if this is not controlled, then there is a nuclear explosion. That is how an atomic bomb works.
Another example is a state of instability in snow on a mountain side. If snow begins to move at the top of the mountain, it pushes the snow below it to give way, this pushes the snow below it to give way in turn, going down the mountainside until the snow runs out or the mountain levels out. This is an avalanche.
Another example is a situation where the electric grid is overloaded to the point of instability. A failure in a transformer can cause a power surge that causes another failure, this causes other power surges in other places, resulting in other failures. This produces widespread power outage.
Chain reactions continue until some sort of equilibrium is attained, or until the unstable features of the situation have lost their energy. In human terms, the results are often destructive or at least dangerous.
What else can I help you with?
Do chain reaction takes place in nuclear reactor?
Yes, chain reactions take place in nuclear reactors. In a nuclear reactor, the chain reaction involves the splitting of uranium atoms (fission) which releases energy and more neutrons, leading to further fission reactions. Control rods are used to regulate and maintain the chain reaction at a steady rate.
What is meant by chain reaction in nuclear reactor?
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.
Neutrons released in a fission reaction can strike other nuclei and cause?
further fission reactions, leading to a chain reaction. This process releases more neutrons, producing a large amount of energy. Controlling the rate of the chain reaction is crucial for nuclear power generation and atomic weapons.
Why are boron rods used to control fission Reactions?
Boron rods are used in nuclear reactors to absorb excess neutrons and control the fission reaction by regulating the rate of the chain reaction. By inserting or withdrawing boron control rods into the reactor core, the amount of neutron absorption can be adjusted to maintain the desired level of reactor power and stability.
How could you increase the rate of fission reactions?
Fission does not respond to changes in temperature and pressure like chemical reactions do. In a nuclear reactor, the fission chain reaction can be sped up by removing rods of cadmium, which absorb neutrons. These are in place to prevent the reaction from occurring too quickly. Remove them, and the chain reaction may proceed out of control.
Brakes are to a car as control rods are to a nuclear-fission chain reaction?
Brakes in a car are used to slow down or stop the vehicle, while control rods in a nuclear-fission chain reaction are used to control and regulate the reaction by absorbing neutrons and managing the rate of fission. Both systems play a critical role in ensuring safety and stability in their respective mechanisms.
Does a chain reaction involve fission?
Yes, a chain reaction is all fission, just out-of-control fission. Usually, fission creates 2 neutrons per decay, but it is controlled by the fact that lots of neutrons get absorbed by U-238, which doesn't fission, unlike U-235, which does, and by the control rods, which also absorb lots of neutrons. But if these fail to contain the outbreak of neutrons, and the fail safes (which usually just drop the control rods totally into the reactor, stopping any chain reaction) fail, then an exponentially accelerating chain fission reaction can start, and once it starts, it's pretty much impossible to stop.
When was fission reaction invented?
The first time a fission chain reaction was produced was in 1942
What particle is used to start nuclear fission?
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.
Is a chain reaction possible in a substance that emit no neutrons when it fission?
No, a chain reaction is not possible in a substance that emits no neutrons when it undergoes fission. Neutrons are required to sustain a chain reaction by triggering the fission of other atoms in the substance. Without neutron production, the fission process cannot continue to release energy and sustain the chain reaction.
For a chain reaction to occur each vision must produce at least more fission reaction Apex?
In a chain reaction, each fission reaction must produce at least one additional fission reaction to sustain the reaction. This is necessary to achieve a self-sustaining nuclear reaction where each fission event leads to more fission events, releasing energy in the process. Without this multiplication of fission reactions, the chain reaction would not be able to continue and sustain itself.
Brakes are to a car as control rods are to a nuclear-fission chain reaction - true or false?
True. Brakes control the speed of a car by reducing its kinetic energy, while control rods in a nuclear reactor control the rate of fission reactions by absorbing neutrons and reducing the chain reaction. Both mechanisms are essential for safely managing the system.
What is the role of control rods in a fission reaction?
Control rods are used to absorb neutrons in a nuclear reactor to regulate the rate of fission reactions. By adjusting the position of the control rods, operators can control the power level and ensure safe and stable operation of the reactor. If the reactor begins to overheat, control rods can be inserted further to slow down or stop the chain reaction.
Do chain reaction takes place in nuclear reactor?
Yes, chain reactions take place in nuclear reactors. In a nuclear reactor, the chain reaction involves the splitting of uranium atoms (fission) which releases energy and more neutrons, leading to further fission reactions. Control rods are used to regulate and maintain the chain reaction at a steady rate.
Can the chain reaction of nuclear fission be stopped or controlled?
Yes, the chain reaction of nuclear fission can be controlled by using control rods made of materials like boron or cadmium that absorb neutrons, thus regulating the rate of fission. Additionally, cooling systems can also be used to control the temperature and prevent the reactor from overheating.
What is it called when nuclear fission is repeated?
It is called nuclear chain fission reaction.
How is fission inside a powerplant controlled?
Fission in a power plant is controlled by using control rods made of materials like boron or cadmium that absorb neutrons, slowing down or stopping the chain reaction. By adjusting the position of these control rods, operators can regulate the rate of fission, maintaining a stable and controlled nuclear reaction to generate heat for electricity production.
