Isotope effects on franck-condon factors. V. Electronic transitions of isotopic O₂, N₂, C₂, and H₂ molecules

Arrays of Franck-Condon factors for vibrational quantum numbers up to v′ and v″ =14 were computed using Morse potentials, for the Schumann-Runge bands of ¹⁶O₂, ¹⁶O ¹⁸O, and ¹⁸O₂, for the first positive and the Vegard-Kaplan band systems of ¹⁴N₂ and ¹⁴N ¹⁵N, for the Swan bands of ¹²C₂ and ¹²C¹³C, and for the Lyman bands of H₂ and D₂. The isotope effects on vibrational transition probabilities are large at the minima between the loci of the Franck-Condon parabolas and smallest at the loci of the maxima.