Several different descriptions in different sources of the Birge-Sponer extrapolation methods based on Morse oscillator model are discussed. In the correct description, the dissocation limit and dissocaition energy should be different. Morse oscillato...
Several different descriptions in different sources of the Birge-Sponer extrapolation methods based on Morse oscillator model are discussed. In the correct description, the dissocation limit and dissocaition energy should be different. Morse oscillator model used often to analyze the electronic absorption spectrum of diatomic molecule are applied to determine spectroscopic constants of the B electronic state of iodine molecule. Calculation of the dissociation energy using all of the observed vibrational energy levels gives poor result. However extrapolation of calculated dissociation energies in Morse oscillator model by considering only higher observed vibrational energy levels gives reliable and accurate value of the dissociation energy of the B state of iodine.