Interaction of Oxygen and Carbon Dioxide at High Pressure and Temperature

The interaction potential parameters of original molecules and those of atoms and molecules of dissociation products are determined by shock Hugoniot data of molecular fluid in this article. At low pressure, Ross’s modification of hard-sphere perturbation theory is used to evaluate interaction potential parameters of original molecules. At high pressure, potential parameters of dissociation products are calculated using chemical equilibrium method originated from statistical mechanical theory. Comparing to those from the corresponding states scaling relations, the potential parameters obtained in this article using the above method have a better description for impact experiments in a wide pressure range.