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ABSTRACT The effects of the spin-other-orbit and spin-spin interactions on the energy levels of the 2 p 3 3 s configuration of oxygen are investigated, and they are found to make an appreciable contribution to the fine structure. The interactions are shown to have a negligible effect on the strengths of all the stronger lines of the 2 p 4 -2 p 3 3 s array, and the more important of the weaker transitions are likewise little affected. The value to be adopted for the radial integral involved in the absolute oscillator strengths is discussed, and numerical values of the oscillator strengths are given.
R. H. Garstang (Sun,) studied this question.