Laser induced fluorescence of the 0–6, 1–6, and 0–5 bands of the transition of Bi2

Analysis of the 0–6, 1–6, and 0–5 bands of the A–X transition of Bi2 with a single-mode, tunable cw dye laser gave the following rotational constant values: A state: [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text]; X state: [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text].The electronic symmetries of the A and X states are confirmed to be [Formula: see text] and [Formula: see text], respectively, supporting the assignment of the X state as the ground state.