The behaviour of fluids of Quasi-Spherical molecules. I. Gases at low densities

Authors:
  • SHSd Hamann
    Sd Hamann
  • JLJa Lambert
    Ja Lambert
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Abstract
Consideration of the spherically smoothed mutual potential energy between nearly spherical polyatomic molecules leads to the conclusion that it can often be well represented by a (28,7) type of Lennard-Jones potential. Second and third virial coefficients have been calculated for this potential and also for (∞,6) and (∞,7) potentials. The (28,7) interaction energy gives a good description of the properties of gases of quasi-spherical molecules. For these gases it is markedly superior to the more usual (12,6) potential.