Second Virial Coefficients of Gases Obeying a Modified Buckingham (Exp—Six) Potential

Abstract

The second virial coefficient has been calculated for gases obeying a modified Buckingham potential, (Exp‐Six), [open phi](r)= ε 1−6/α [ 6 α e α(1−r/r m ) − ( r m r ) 6 ] . The results are tabulated over the temperature range kT / ε from 0.40 to 400, and for seven values of the parameter α, from 12 to 15. The treatment was entirely classical, and no corrections for quantum effects were made. A separate paper will present the evaluation of the parameters for specific substances and applications of the results, together with applications of the calculated transport properties given in the preceding paper.