Binding Energy Per Nucleon The binding energy per nucleon of a nucleus is the binding energy divided...
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Transcript of Binding Energy Per Nucleon The binding energy per nucleon of a nucleus is the binding energy divided...
![Page 1: Binding Energy Per Nucleon The binding energy per nucleon of a nucleus is the binding energy divided by the total number of nucleons in the nucleus Binding.](https://reader036.fdocuments.us/reader036/viewer/2022082405/56649e575503460f94b4fd45/html5/thumbnails/1.jpg)
Binding Energy Per Nucleon
The binding energy per nucleon of a nucleus is the binding energy divided by the total number of nucleons in the nucleus
Binding energy per nucleon = total binding energy of nucleus__________________________number of nucleons in the nucleus
In the case of helium 28.3 7.1 MeV________ = 4
The great of nuclides have a value of around 8MeV per nucleon
![Page 2: Binding Energy Per Nucleon The binding energy per nucleon of a nucleus is the binding energy divided by the total number of nucleons in the nucleus Binding.](https://reader036.fdocuments.us/reader036/viewer/2022082405/56649e575503460f94b4fd45/html5/thumbnails/2.jpg)
![Page 3: Binding Energy Per Nucleon The binding energy per nucleon of a nucleus is the binding energy divided by the total number of nucleons in the nucleus Binding.](https://reader036.fdocuments.us/reader036/viewer/2022082405/56649e575503460f94b4fd45/html5/thumbnails/3.jpg)
The largest value occurs at around Fe-56.
This implies that Fe-56 is the most stable nucleus.
Notice that uranium 235 a more massive nucleus has a lower binding energy per nucleon.
If you can “split” a nucleus of U-235 you will release the excess binding energy, because lower mass “fission products” with higher binding energy per nucleon will be produced.
This releases a tiny amount of energy per fission (less than 1 MeV) but this adds up to 18.7 million kWh per kg of U-235.)
![Page 4: Binding Energy Per Nucleon The binding energy per nucleon of a nucleus is the binding energy divided by the total number of nucleons in the nucleus Binding.](https://reader036.fdocuments.us/reader036/viewer/2022082405/56649e575503460f94b4fd45/html5/thumbnails/4.jpg)
The key to this release is the chain reaction produced by the free neutrons realesed during fission when the mass of U-235 exceeds a critical level (about 52kg- a sphere17cm in diameter
![Page 5: Binding Energy Per Nucleon The binding energy per nucleon of a nucleus is the binding energy divided by the total number of nucleons in the nucleus Binding.](https://reader036.fdocuments.us/reader036/viewer/2022082405/56649e575503460f94b4fd45/html5/thumbnails/5.jpg)
Less massive nuclei can relase binding energy if they are fused together to make larger nuclei.
Nuclear Fusion powers the Sun where hydrogen nuclei are converted into helium atoms in a step by step process known as the proton-proton chain