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Current issue   Ukr. J. Phys. 2014, Vol. 59, N 2, p.172-178


Ushcats M.V.

Admiral Makarov National University of Shipbuilding
(9, Prosp. Stalingrad Heroes, Mykolaiv 54025, Ukraine; e-mail: mykhailo.ushcats@nuos.edu.ua)

Virial Coefficients of Modified Lennard-Jones Potential

Section: General problems of theoretical physics
Original Author's Text: Ukrainian

Abstract: A modified Lennard-Jones potential with a finite interaction radius, which maintains the realistic behavior of its parent and greatly simplifies the numerical simulation of high-density thermodynamic systems, has been considered. The virial coefficients of this potential have been calculated up to the fifth order, inclusive, in a wide range of temperatures. The modified potential can be applied not only in numerical experiments but also in theoretical studies. It is proposed as a reference model to test the adequacy of various theoretical and experimental approaches.

Key words: virial coefficient, irreducible cluster integral, Mayer function, spinodal, binodal.