The spark spectra of zinc. II. Zinc III

The energy levels of zinc III have been revised and extended as a result of improved wavelengths of the spectral lines, particularly those in the vacuum ultraviolet. Of the 70 levels listed in Atomic Energy Levels (Moore 1952), 37 have been retained in the present analysis, although the designations of 14 of these have been changed. An additional 233 levels are established. The new scheme results in 1279 line classifications in the region from λ 383 Å to λ 6270 Å. A value of 320 390 cm −1 is given for the ionization potential of Zn III.

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