摘要
Generally, rotation-vibration molecular spectra are described by the Dunham expression in the form E（v, I）=sum from n=i,j Y<sub>i,j</sub>（v+1/2）<sup>i</sup>[I（I+1）]<sup>j</sup> , （1）where I is the angular momentum and v is the vibrational quantum number. The numerical coefficients Y<sub>i,j</sub> of the first few terms of the Dunham expression are obtained by the solution of the Schrdinger equation for the Morse potential, while the rest is fixed by experimental data. For rotational spectra, the Dunham expansion can be written
基金
Project partly supported by the National Natural Science Foundation of China
Project partly supported by the Grant LWTZ-1298 of Chinese Academy of Sciences.
