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How many neutrons are produced during a typical uranium fission reaction and what is the role of these neutrons in a nuclear chain reaction?
A typical uranium fission event produces 2 to 3 neutrons. These neutrons are moderated (slowed down) and go on to initiate the fission of more uranium. On average, in a controlled reaction that is maintained at normal criticality (KEffective = 1), each fission creates exactly one neutron that is used to produce another fission.
Which describes what happens during a chain reaction?
Neutrons released during a fission reaction trigger other fission reactions.
Nuclear fuels are bombared by what particles to induce their fission?
Nuclear fuels are bombarded by neutrons to induce their fission reaction. Neutrons are able to penetrate the nucleus of the fuel atoms and cause them to split, releasing energy and more neutrons in the process. This chain reaction is the basis for nuclear power generation.
How many neutrons are there when uranium 235 is bombarded with a neutron?
When uranium-235 is bombarded with a neutron, it may undergo a fission reaction, resulting in the formation of multiple fission products, which may include different numbers of neutrons depending on the specific reaction that takes place. Typically, fission of uranium-235 produces around 2 to 3 neutrons per fission event.
A nuclear fission reaction occurs when a U-235 nucleus is bombarded by a neutron the products are xe 143 3 neutrons and a strontium isotope?
In a nuclear fission reaction, a U-235 nucleus absorbs a neutron and undergoes fission into smaller nuclei such as Xe-143, Sr, and several neutrons. This process releases a large amount of energy and additional neutrons, which can initiate a chain reaction in a nuclear reactor.
What characteristics of a fission reaction makes a chain reaction possible?
The excess of neutrons produced.
Describe a characteristic of a fissionable substance that is essential for a chain reaction to sustain itself?
Firstly it must be able to capture neutrons which then have a high probability of causing its nuclei to undergo fission or splitting, and the fissions must produce enough further neutrons so that for every fission that occurs, another one will follow.
Describe a characteristic of a fissionable substance that is essential for a chain-reaction to sustain itself?
The fission process is sustained by neutrons. A neutron entering a nucleus and causing fission must be replaced in order to cause the next fission, and so on. So the fissionable substance must emit more neutrons when fission occurs, and enough of them so that despite some being absorbed by the moderator and some leaking from the reactor boundary, there is still enough to maintain the chain reaction. Uranium 235 emits on average about 2.5 neutrons per fission (you might say what is half a neutron, but this is explained by the fact that fissions have a range of possible results, with different numbers of neutrons emitted, and the average is 2.5).
In a nuclear fission reaction which component both triggers the reaction and is produced by the reaction?
neutrons
What is it called when neutrons released from a fission event cause other fission events in a continued self sustaining cascade?
This process is called a nuclear chain reaction. Neutrons released from one fission event trigger other fission events, creating a self-sustaining reaction that releases energy and more neutrons, continuing the chain reaction.
How many neutrons are produced during a typical uranium fission reaction and what is the role of these neutrons in a nuclear chain reaction?
A typical uranium fission event produces 2 to 3 neutrons. These neutrons are moderated (slowed down) and go on to initiate the fission of more uranium. On average, in a controlled reaction that is maintained at normal criticality (KEffective = 1), each fission creates exactly one neutron that is used to produce another fission.
Which describes what happens during a chain reaction?
Neutrons released during a fission reaction trigger other fission reactions.
What is fissile?
a thermal slow neutrons that will fission by a chain reaction of the nutrons.
The process in which each split atom gives up neutrons?
The act of an atom splitting is called nuclear fission. In nuclear fission where we see neutrons emerge with fission fragments, and we then see those neutrons initiate other fission reactions is called a nuclear fission chain reaction.
What particle is nessicary to start a fisson reation?
Neutrons are necessary to start a fission reaction. When a neutron collides with a heavy atomic nucleus, such as uranium-235, it can induce the nucleus to split and release more neutrons, leading to a chain reaction.
What makes a fission reaction possible is that certain atoms are stable unstable energetic very small?
What makes a fission reaction possible is that certain atoms, such as uranium and plutonium, are unstable and capable of splitting into smaller atoms when struck by a neutron. This process releases a large amount of energy in the form of heat and additional neutrons, which can go on to trigger more fission reactions in a chain reaction.
Is neutron particle is required both to start and as a product in a fissin reaction?
Neutrons are required to start a fission reaction as they can initiate the splitting of uranium or plutonium atoms. In the process, additional neutrons are released which can go on to trigger more fission events. So, while neutrons are necessary to begin a fission reaction, they are not typically produced as a product of the reaction.
