Tang-Toennies damping function

The fimctions D (R) in these expressions are Tang-Toennies damping functions [220], that prevent the inverse power terms from dominating at short range they are given by... 

Tang K T and Toennies J P 1984 An improved simple model for the van der Waals potential based on universal damping functions for the dispersion coefficients J. Chem. Phys. 80 3726... 

It follows from the limiting values that the damping function prevents the divergence of the multipole expansion at small internuclear distances R. In many applications the damping function is taken in the Tang-Toennies form210-212, cf. Section 9.3,... 

Indices k and l count over all solvent and solute atoms, respectively C is a parameter rki is the separation between the Mi solvent atom and the Zth solute atom, fkiiru) is a damping function active at short separations we use the variant derived by Tang and Toennies [98] ... 

H. A one-parameter damping function of the incomplete gamma form, based on as5miptotic arguments and the H-H interaction, is advocated by Tang and Toennies [129] ... 

The screening function /damp may be represented using Tang-Toennies expression [17] or using intermolecular overlap integrals pq [15]... 

Tang, K. T, Toennies, J. P. (1984). An Improved Simple-Model for the Van Der Waals Potential Based on Universal Damping Functions forthe Dispersion Coefficients,/ Chem. Phys., 80,3726-3741. 

Tang, K. T., 8c Toennies, J. P. (1992). The damping function of the van der waals attraction in the potential between rare gas atoms and metal surfaces. Surface Science Letters, 279, 203-206. 

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