Abstract
Branching ratios of 280 W II lines from 19 excited levels in the wavelength range 204–750 nm are presented which were obtained by means of emission measurements on a high-current hollow cathode as well as a suitable Penning discharge lamp and by using a high-resolution Fourier-transform spectrometer. The branching ratios are combined with recently measured lifetimes to determine absolute transition probabilities. As a result the uncertainty of the f-values typically is between 7 and 9%. A comparison with literature data is done only on a very limited scale because the overlap with other authors is small. Good agreement was achieved with thoeretical calculations, especially for the strong transitions.
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