Summary
The direct exchange-energyE of two atoms in the quasicrystalline picture of liquid argon is calculated. The result isE evap/E- 1.4. It is shown that the atomic motions in the liquid, enhanced with respect to the solid by the mutual correlations, can explain the differences experimentally determined in the structure of the two states.
Riassunto
Si è calcolata l’energiaE per lo scambio diretto di due atomi, nel modello quasicristallino dell’argon liquido. Il risultato è Eevap/E ≅1.4. Si mostra come i moti degli atomi nel liquido. esaltati rispetto al solido dalle correlazioni mutue, possono spiegare le differenze determinate sperimentalmente nella struttura dei due stati.
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References
A similar calculation has been made for copper in the solid state, byF. Seitz andH. B. Huntington:Phys. Rev.,61, 315 (1942). The activation energy found was too large with respect to the experimental value.
N. S. Gingrich:Rev. Mod. Phys.,15, 90 (1943).
A. Michels, Hub. Wijker andH. K. Wijker:Physica. 15, 627 (1949).
In the work ofJ. Corbett andJ. H. Wang:Journ. Chem. Phys.,25, 422 (1956); only one point of the curveD =D(T) is determined.
N. S. Rudenko andH. H. Schubnikov:Phys. Zeit. Sowiet.,6, 470 (1934).
C. Zener:Ac. Crys.,3, 346 (1950); (Evaluation for copper in the solid state).
A. Eisenstein andN. S. Gingrich:Phys. Rev.,62 (1942) 627.
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Nardi, V. On the atomic motions in quasi-crystalline argon. Nuovo Cim 7, 545–551 (1958). https://doi.org/10.1007/BF02747767
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DOI: https://doi.org/10.1007/BF02747767