Eq. ( ), along with the ideal gas law at temperature 298 K and 1.0 bar, leads to 0.372 molecules per V so that in this case we estimate the linear particle density to be A = 0.372/(2πr o ). Here, we have set the new outer radius to be r o as computed in the previous section. Now using this value for A in Eq. ( ) setting R o = r o , and using LJ parameter values for a CO 2 -CO 2 interaction, the potential for the secondary band is computed and shown in Fig. .