Dissociation Energies, r-Centroids and Franck-Condon Factors of H2 and N2+ Astrophysical Important Molecules

The potential energy curves for the ground state of diatomic H2 and N2+ molecules are constructed techniques using the five-parameter H-H function. The estimated dissociation energies are 4.61 ± 0.1 eV and 8.70 ± 0.20 eV for H2 and N2+ respectively. The estimated D0 values are in good agreement with literature values. The r-Centroids and Franck-Condon factors for the bands of C1∏u → X1Σ+g of H2 and A2∏u1 → 4Σu+ X of N2+ molecules have been determined. The Franck-Condon factors are evaluated by the approximate analytical method of Jarmain and Fraser. The absence of the bands in these systems is explained.

Vacuum ultraviolet photochemistry of the conformers of the ethyl peroxy radical

C2H5O2 plus its gauche and trans conformers are studied using synchrotron-based VUV photoionization mass spectrometry and theoretical calculations, and it is found that the gauche conformer has favorable Franck–Condon factors in photoionization.

Franck – Condon Factors And r- Centroids of D – A and D – B band systems of AlO molecule

Franck–Condon factors and r-centroids were computed for the D2S+ - A2Πi and D2S+ - B2S+ band systems of the aluminium oxide (AlO) molecule for the v' = 10; v" = 10 matrix using the method developed by Jarmain and Nicholls. The latest Fourier-transform Spectrometer molecular constants of ground and excited state are used. The intensities of these bands are discussed and the Franck–Condon factors and r-centroids obey the established relationships