Why is this fission reaction possible?

In summary, the conversation discusses the reason why a reaction involving uranium and a neutron is favorable. It is explained that this reaction leads to an increase in binding energy per nucleon and the release of energy. It is also mentioned that the neutron cannot split up the uranium into individual protons and neutrons, but there is still binding energy present in the resulting nuclei. The conversation concludes with a clarification and understanding of this explanation.
  • #1
Janiceleong26
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1. Homework Statement

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Homework Equations

The Attempt at a Solution


I thought it was because the kinetic energy of the neutron is equal to or larger than the binding energy of Uranium.. But that's not the answer. Can someone please explain why? Thanks
 
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  • #2
It is favorable because in this reaction energy is released: this release of energy comes from the fact that the binding energy per nucleon increases from reactants (U) to products (Ba + Kr).
 
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  • #3
If the neutron would be so high-energetic, it could split up the uranium into 92 individual protons and 143 neutrons. It cannot do that (it would need more than 1 GeV for that - but then you would get different reactions), but you also have binding energy at the right side in the two nuclei.
 
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  • #4
Physics-Tutor said:
It is favorable because in this reaction energy is released: this release of energy comes from the fact that the binding energy per nucleon increases from reactants (U) to products (Ba + Kr).
Oh I see.. Thanks a lot !
 
  • #5
mfb said:
If the neutron would be so high-energetic, it could split up the uranium into 92 individual protons and 143 neutrons. It cannot do that (it would need more than 1 GeV for that - but then you would get different reactions), but you also have binding energy at the right side in the two nuclei.
Oh right.. Thanks for that point. I got it .
 

FAQ: Why is this fission reaction possible?

What is fission and why is it important?

Fission is a nuclear reaction in which a heavy atomic nucleus splits into smaller fragments, releasing a large amount of energy. It is important because it is the process used in nuclear power plants to generate electricity and in nuclear weapons to create explosions.

How does a fission reaction occur?

A fission reaction occurs when a heavy atom, such as uranium, is struck by a neutron, causing it to split into two smaller atoms, releasing more neutrons and a large amount of energy. These neutrons can then go on to strike other atoms, creating a chain reaction.

Why is uranium used in fission reactions?

Uranium is used in fission reactions because it is a heavy and unstable element, making it easier to split and release energy. It is also relatively abundant and can sustain a chain reaction, making it ideal for use in nuclear power plants and weapons.

How is the energy from a fission reaction harnessed?

The energy from a fission reaction is harnessed by capturing the heat released during the splitting of atoms and using it to heat water and produce steam. The steam then turns turbines, which generate electricity.

What are the potential risks and benefits of fission reactions?

The potential benefits of fission reactions include the production of large amounts of energy with relatively low carbon emissions. However, there are also potential risks, such as the release of radioactive materials and the potential for accidents or misuse of nuclear technology. Proper safety measures and regulations are necessary to minimize these risks.

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