Nucle — Formula Sheet

1u = mass of one 12C atom / 12 = 1.992647 × 10^-26 kg / 12 = 1.660539 × 10^-27 kg

A = Z + N

m_p = 1.00727 u = 1.67262 × 10^-27 kg

m_n = 1.00866 u = 1.6749 × 10^-27 kg

R = R0 A^(1/3)

R0 = 1.2 × 10^-15 m = 1.2 fm

Distance of closest approach for 5.5 MeV alpha to gold nucleus = 4.0 × 10^-14 m

ΔM = [Z m_p + (A - Z)m_n] - M

E_b = ΔM c^2

E_bn = E_b / A

E = mc^2

1 u = 931.5 MeV/c^2

Atomic masses are measured in atomic mass unit, where 1u = mass of one 12C atom / 12 = 1.660539×10^-27 kg.

Its mass is 1.00866 u = 1.6749×10^-27 kg.