The shape of the inner-wing satellites of self-broadened first resonance lines of caesium and rubidium

Theoretical satellite profiles have been calculated by means of the modified quasi-static approximation. Comparison with the experimental results shows that the shape of the theoretical satellite band depends on precise knowledge of the interatomic potential curves. A simple quadratic approximation of the 0 g - ( 2 P 3 2/+ 2 P 3 2/+ 2 S 1 2/) potential curve near the extremum was also tested in the case of the caesium 8565 AA satellite band.