Abstract
Extensive configuration interaction wavefunctions are determined and used to calculate multiplet oscillator strengths of transitions between doublet states in Si II. Length and velocity forms are in good agreement, indicating a greater degree of convergence than was achieved in previous calculations. The f-value for the 1814 AA multiplet is discussed in some detail. The authors' calculated value is 0.0018 with an estimated error of +or-0.0004. This is lower than the ab initio value of Luo et al. (1988) or the empirically determined value of Shull et al. (1981).
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