Rotational structures of long-range diatomic molecules
نویسنده
چکیده
We present a systematic understanding of the rotational structure of a long-range (vibrationally highly-excited) diatomic molecule. For example, we show that depending on a quantum defect, the leastbound vibrational state of a diatomic molecule with −Cn/r (n > 2) asymptotic interaction can have only 1, 2, and up to a maximum of n − 2 rotational levels. A classification scheme of diatomic molecules is proposed, in which each class has a distinctive rotational structure and corresponds to different atom-atom scattering properties above the dissociation limit. PACS. 33.15.Mt Rotation, vibration, and vibration-rotation constants – 34.10.+x General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.) – 03.75.Nt Other Bose-Einstein condensation phenomena – 03.75.Ss Degenerate Fermi gases
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