...corresponds to each set of transitions of the molecule between two electron states. Figure 2.1. Diagram of Vibrational and Rotational Levels of Two Electronic States (a and b) of a Molecule (the single and double primes on the v and J indicate that the corresponding levels belong to the upper...

...— (3.11) (B,v'=0) P Branch O Branch R Branch Band Sequence Fig. 3.3 Schematic representation of the vibrational and rotational levels of two electronic states A and B of a molecule. The left one shows the transitions involving P, O and R branches. The right one shows the transitions which...

...vibrational level in the same electronic state, producing what are called "bands" in the infrared ,10 Vibrational and rotational levels of two electronic states A and B of a diatomic molecule, with transitions shown by the vertical arrows. region. Electronic spectra are due...