Daughter charge: $Z_d = 82$ (lead) - Cluster charge: $z_c = 6$ (carbon) - $R = 1.2(209^{1/3} + 14^{1/3}) = 1.2(5.935 + 2.410) = 10.01\,\text{fm}$ - $V_C(R) = 6 \times 82 \times 1.440/10.01 = 70.8\,\text{MeV}$ - $b = 6 \times 82 \times 1.440/29.83 = 23.74\,\text{fm}$ - $\rho = 10.01/23.74 = 0.422$