Fission Reaction: Counting Neutrons & Nuclear Reactor Importance

In summary, the given reaction involves the collision of 235U92 and 1n0, resulting in the formation of 148La57 and 85Br35, as well as the release of neutrons. The importance of these neutrons in a nuclear reactor lies in their ability to induce further reactions, potentially leading to a chain reaction. Proper control and moderation of these neutrons is crucial for maintaining a stable and controlled nuclear reaction.
  • #1
songoku
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Homework Statement


235U92 + 1n0 --> 148La57 + 85Br35 + neutrons

How many neutrons are released in this reaction? What is the importance of these neutrons in a nuclear reactor?

Homework Equations





The Attempt at a Solution


I want to ask about the importance of these neutrons in a nuclear reactor. My guess why neutrons are used because they are neutral so they can penetrate to the nucleus. And about the neutrons on the RHS, it just to balanced the atomic and mass number..

I'm completely not sure about my answer...

Thanks
 
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  • #2
It is critical to realize that a neutron hitting the Uranium nucleus causes the reaction. If the reaction releases at least one neutron that causes another reaction, it will continue as a chain reaction. If several successful neutrons are released, then you get a big bang.
 
  • #3
Hi delphi

So the neutrons on the left side is used to cause the reaction and on the left side is used for another reaction?

Thanks
 
  • #4
Yes, the left side is "before" and the right side "after".
Looks like you have more neutrons after, so it can sustain a fission reaction.
 
  • #5
U235 is a radioactive element but it does not split. When it absorbs a neutron, it becomes U236.
It is in a highly excited state and splits into two fragment almost instantaneously.
 
  • #6
songoku said:
235U92 + 1n0 --> 148La57 + 85Br35 + neutrons

Hi there,

Just so you know, the reaction you wrote above is one of the possible fission reaction in a reactor.

There are many others, which can free one or more neutrons. These neutrons are released with great energy and need to be slowed down, before they can induce another reaction.

Cheers
 
  • #7
Ok. Thanks a lot for all of you
 

1. What is a fission reaction?

A fission reaction is a type of nuclear reaction in which the nucleus of an atom splits into smaller parts, releasing a large amount of energy. It is the process that is used in nuclear power plants to generate electricity.

2. How are neutrons counted in a fission reaction?

Neutrons are counted using a device called a neutron detector. This device detects the presence of neutrons by measuring the radiation they emit. The number of neutrons present in a fission reaction can be calculated by analyzing the data collected by the neutron detector.

3. Why are neutrons important in a fission reaction?

Neutrons are important in a fission reaction because they are the key to sustaining the reaction. During a fission reaction, neutrons are released and can be absorbed by other atoms, causing them to split and release more neutrons. This chain reaction is what produces the large amount of energy in a nuclear reactor.

4. What is the role of a nuclear reactor in a fission reaction?

A nuclear reactor is a device that is used to control and harness the energy produced by a fission reaction. It is designed to sustain the chain reaction and convert the released energy into a usable form, such as electricity.

5. What is the importance of nuclear reactors?

Nuclear reactors play a crucial role in providing a reliable source of electricity. They also have a much lower environmental impact compared to other forms of energy production, such as fossil fuels. Additionally, nuclear reactors are used in various medical and scientific applications, such as cancer treatment and research.

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