Oscillator strengths for transitions in C-like Ne, Mg, Si, and S ions

Energy levels and oscillator strengths (transition rates) have been calculated for the fine-structure transitions among the levels of the (1s(2)) 2S(2)2p(2), 2s2p(3), 2p(4), 2s(2)2p3s, 2s(2)2p3p, and 2s(2)2p3d configurations of C-like Ne V, Mg VII, Si IX, and S XI ions using the CIV3 program. The extensive configuration interaction and relativistic effects have been included while generating the wave functions. The results are compared with other available theoretical values. The differences among the various calculations are discussed and the accuracy of the results is assessed.