The theoretical transition probabilities between the B 3Πg and the A 3Σu+, W 3Δu, B′ 3Σu− states of N2

The electronic transition moment functions between the B 3Πg state and the A 3Σu+, W 3Δu, B′ 3Σu− states of N2 are studied using the internally contracted multireference configuration interaction method based upon complete active space SCF reference wavefunctions. The dependence of the moments on both the one and n-particle basis sets has been investigated in detail. The calculated radiative lifetimes for the vibrational levels of the B 3Πg state are in excellent agreement with the most recent data published for υ′ = 5 to 12, measured by laser induced fluorescence, and for υ′ = 0, measured by electron impact induced fluorescence.