Author(s)

Chang-Feng Yu, Chang-Jun zhu, Chong-Hui Zhang, Li-Xun Song, Qiu-Pin Wang

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In this paper, a new method on constructing analytical potential energy functions is pre-sented, and from this a analytical potential en-ergy function applied to both neutral diatomic molecules and charged diatomic molecular ions is obtained. This potential energy function in-cludes three dimensionless undetermined pa-rameters which can be determined uniquely by solving linear equations with the experimental spectroscopic parameters of molecules. The solutions of the dimensionless undetermined parameters are real numbers rather than com-plex numbers, this ensures that the analytical potential energy function has extensive uni-versality. Finally, the potential energy function is examined with four kinds of diatomic molecules or ions—homonuclear neutral diatomic mole-cule , and , homonuclear charged diatomic molecular ion , and , heter-nuclear neutral diatomic Molecule , and , heternuclear ch- arged diatomic Molecular ion , and ,as a conseque- nce, good results are obtained.

Diatomic Molecules And Ions; Potential Energy Function; Force Constants; Spectroscopic Pa-rameters; Phase Factor

Yu, C. , zhu, C. , Zhang, C. , Song, L. and Wang, Q. (2010) A novel analytic potential function applied to neutral diatomic molecules and charged lons. Natural Science, 2, 184-189. doi: 10.4236/ns.2010.23028.