The Non-Rigid Rotor

非刚性转子

When greater accuracy is desired, the departure of the molecular rotational spectrum from that of the rigid rotor model can be described in terms of centrifugal distortion and the vibration-rotation interaction. To second order in the relevant quantum numbers, the rotation can be described by the expression

当需要更高精度时，分子旋转光谱偏离刚性转子模型的现象可以用离心畸变和振动-旋转相互作用来描述。在相关的量子数的二次近似下，旋转可以表示为以下表达式