Modified Morse Potential for Diatomic Molecules
β Scribed by A.R. Lee; T.M. Kalotas; N.A. Adams
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 140 KB
- Volume
- 191
- Category
- Article
- ISSN
- 0022-2852
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β¦ Synopsis
We present a diatomic potential which closely resembles the standard Morse function but incorporates additional flexibility for fitting experimental vibrational energy-gap data. This flexibility is accommodated by introducing a continuously variable radially dependent change in the exponent of the Morse function, which in practice is adequately realized via a relatively small number of constant parameters. As an illustration, the method is applied to calculate the quantum vibrational levels of the X1Sigma+g ground electronic state of the N2 molecule. Copyright 1998 Academic Press.
π SIMILAR VOLUMES
The problem of representing a diatomic (true) Rydberg-Klein-Rees potential U ' by an analytical function U" is discussed. The perturbed Morse function is in the form U" = U M + Cb, y", where the Morse potential is U M = Dy2, y = 1exp( -a(rre)). The problem is reduced to determination of the coeffici
Two variants of the double exponential potential function and their Ε½ . virial modifications are proposed and tested. The first in reduced variables is F t s ym t Γw Ε½ 2 . y1r2 x w Ε½ 2 . 1r2 x w Ε½ 2 . y1r2 x wΕ½ 2 . 1r2 x4 e m m y1 y1 exp y m y 1 t y m m y 1 q 1 exp m y 1 t Ε½ . . where t s s s R y R
A new generalized potential energy function is suggested for dlatomic moleculer The Dunham. Simons-Parr-Ftilan, Thakkar and Ogilvie potenrials are shown to be particular cases of the generalized potential energy funcrion. II is also shown that the functron suggested may reproduce the path of the pot