TY - JOUR AU - Ushcats, M. V. AU - Ushcats, S. J. AU - Mochalov, A. A. PY - 2019/01/08 Y2 - 2024/03/29 TI - Virial Coefficients of Morse Potential JF - Ukrainian Journal of Physics JA - Ukr. J. Phys. VL - 61 IS - 2 SE - General problems of theoretical physics DO - 10.15407/ujpe61.02.0160 UR - https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2019118 SP - 160 AB - <p>Using the numerical quadrature integration method and a modification of the Mayer sampling Monte Carlo technique proposed recently, the virial coefficients of the known three-parameter Morse potential have been calculated to the seventh order inclusive for potential parameter, aD, values of 3.0, 4.0, 6.0, 8.0, and 10.0. At low temperatures, a certain regularity in the behavior of the virial coefficients of all orders (beginning from the third one) is revealed for various aD-values. This regularity can be approximated by an equation similar to that previously obtained for the Lennard-Jones (12–6) and modified Lennard-Jones models.</p> ER -