Calculation of the Van der Waals Potential of Argon Dimer Using a Modified Tang-Toennies Model

Authors

  • J. F. Peng Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
  • P. Li Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
  • J. Ren Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
  • L. W. Qiao Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
  • K. T. Tang Department of Physics, Pacific Lutheran University, Tacoma, Washington 98447, USA

DOI:

https://doi.org/10.4208/jams.011511.022111a

Keywords:

modified TT potential model, argon dimer, van der Waals potential.

Abstract

The Tang-Toennies (TT) potential model was modified based on the physical nature of the interatomic interaction to describe the $Ar-Ar$ potential very accurately in the short range of the repulsive region. Using the modified TT potential model, the ground state van der Waals potential energy curve of $Ar_2$ was calculated. Compare to the experimental result, the current potential shows that the modified potential model not only gives the precise result in the long-range part, but also gives quite accurate result in the short-range repulsive part.

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Published

2011-02-01

Issue

Vol. 2 No. 4 (2011)

Section

Articles