PhysicsChapter 8: Nuclear Physics
Nuclear Binding Energy
Nuclear binding energy
Definition
Nuclear binding energy is the minimum energy required to completely separate a nucleus into its individual protons and neutrons. It is also equal to the energy released when the nucleus forms from separate nucleons.
Physical Meaning
Mass defect and binding energy are connected by: B.E. = Δmc² For nuclear calculations, mass is often expressed in atomic mass units. Useful conversion: 1 u ≈ 931.5 MeV/c² Therefore, if `Δm` is expressed in `u`: B.E.(MeV) ≈ Δm(u) × 931.5 Greater binding energy means more energy is needed to completely separate the nucleus. However, comparing nuclei of different sizes requires another quantity: **binding energy per nucleon**.
Formula / Key Relation
**B.E.=Δmc² or: B.E.(MeV)=Δm(u)×931.5**
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Review the key facts, formulas and checks before you move on.Nuclear Binding Energy
Sticky Notes · Quick Revision
`BE = Δmc²`
- `1u ≈ 931.5MeV/c²`
- `BE(MeV)=Δm(u)×931.5`
60-second revision
- Binding energy measures how strongly a nucleus is bound as a whole.
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