Excitation of atomic nitrogen by electron impact

An analytic atomic independent particle model (IPM) is utilized for calculating absolute cross sections for the single particle excitations of atomic nitrogen. The two parameters of the IPM potential are adjusted to reproduce the experimental values of the absolute energies of the 10 excited states 3s-7s, 3p-4p, 3d-5d, and the 2p ground state. Using the Born approximation, we calculate the generalized oscillator strengths (GOS). The GOS are parametrized using convenient analytic forms which lead to analytic total excitation cross sections. The results are compared with Hartree-Fock-Slater calculations and experiment.