Fig. 9.

${\mathit{\text{E}}}_{\text{b}-\text{m}}^{\ast }$ was determined for a range of values of R_p and R_b and plotted as an energy surface, h = 1.7 nm for a and 2.1 nm for b and c. C_m-i-0 = C_m-o-0 = −0.1 nm⁻¹ for a and b, and C_m-i-0 = −0.15 nm⁻¹, C_m-o-0 = −0.05 nm⁻¹ for c. The symbol o marks the local energy minimum of 66.65 kT at R_p = 2.4 nm and R_b = 3.7 nm (a), 75.19 kT at R_p = 2.75 nm and R_b = 4.2 nm (b) and 120.5 kT at R_p = 2.37 nm and R_b = 3.9 nm (c)