Nuclear radius (empirical) (R = R₀ A^(1/3))

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R = R₀ A^(1/3)

What each symbol means

SymbolWhat it stands for
AMass number (nucleon count)
RNuclear radius (m or fm)
R_0Constant ≈ 1.2 fm (1.1–1.3 depending on text)

When to use this

Spherical nucleus approximation; works for stable medium/heavy nuclei.