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The Fe II-spectrum emitted from a pulsed hollow cathode has been investigated in the region 4 800-11 500 Å. As a first result of the analysis 481 lines have been identified as belonging to the 3 d 6 ( 5 D )4 d -3 d 6 ( 5 D )4 f transition array. The term structure shows good agreement with predictions by R. D. Cowan.
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Johansson et al. (1974) studied this question.
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