ALLOWED TRANSITIONS AND INTERCOMBINATION LINES IN C-III AND C-II

Systematic multiconfiguration Hartree-Fock results in the Breit-Pauli approximation are reported for the 2s1 S-1(0) --> 2s2p P-3(1) intercombination line in C III and the 2s(2)2p(2)P-2s2p3 4P multiplet in C II. Length and velocity forms of the oscillator strengths of related allowed transitions are also reported. The latter are used as a check on accuracy along with term energy separation and spin-orbit splitting. The predicted transition rate of 103 +/- 3 s-1 for the intercombination line in C III lies outside the experimental error bars whereas the decay rates for C II are near the lower experimental limits.