Characteristics of Interatomic and the Ion—Atom Interaction in Gases during the Dissociation Process.

We consider the problem of the choice of "free" particle interaction potential and the calculation of virial corrections for interatomic and ion–atom interaction in chemical models with dissociation reactions. We perform a critical analysis of the potentials given in the available literature, propose simple formulas to calculate virial corrections with allowance for the limitations of the two-particle phase space, and present recommendations to apply these formulas. [ABSTRACT FROM AUTHOR]