Summary
The differences in the surface tensions of the various isotopic species of a given simple substance are calculated. The surface tension is expressed in terms of the quantum mechanical pair distribution function and an expansion of the distribution function in powers of h2 is utilized. Calculations are made assuming a Lennard-Jones potential of interaction and the validity of the superposition approximation. An approximate theory of corresponding states is used to relate the surface tensions of the isotopes at different temperatures.
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Oppenheim, I. Quantum mechanical effects on the surface tension of simple liquids. Nuovo Cim 9 (Suppl 1), 180 (1958). https://doi.org/10.1007/BF02824244
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DOI: https://doi.org/10.1007/BF02824244