The 1s2s2p2 5P1,2,3-1s2p3 5S2 Transitions in C III, N IV and OV

Using the beam-foil technique, we have measured the wavelengths, fine structure and decay times of the 1s2s2p2 5P-1s2p3 5S transitions of C III, N IV and O V. We compare the results with multiconfiguration Dirac-Fock calculations. The fine structure is in good agreement with the calculations, while the other values show systematic deviations from theory.