The dissociative excitation of singlet and quintet nickel atom states in e-NiBr2 collisions

The dissociative excitation of singlet and quintet nickel atom states in e-NiBr₂ collisions was studied by the method of extended intersecting beams. Optical excitation functions over the electron energy range 0–100 eV were recorded for most of the spectral lines observed. Possible dissociative excitation channels at low electron energies were discussed. The cross sections of dissociative and direct excitations and dissociative excitations of the NiBr₂ and NiCl₂ molecules were compared.