Excitation of atomic oxygen by electron impact

We have carried out relativistic distorted-wave calculations for the excitation of atomic oxygen from its ground (2p)$^{4} \quad ^{3}$P state to the excited (2p)$^{3}$3s $^{3}$S, $^{3}$P and $^{3}$D states and to the (2p)$^{3}$3d $^{3}$D state in the energy range from 15 to 100 eV. We compare our results for the differential cross sections with both experimental measurements and other theoretical calculations for these transitions and find our calculations agree very well with them. We have also compared our integrated cross sections for the excitation of (2p)$^{3}$3s $^{3}$S for which extensive theoretical and experimental data have been reported.