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High-resolution spectra of a platinum hollow-cathode lamp were obtained from 215 to 3100 nm with a Fourier-transform spectrometer. More than 320 Pt i lines were measured and used to derive accurate energy levels for 30 even and 52 odd levels. Ritz wavelength standards for Pt i in the vacuum ultraviolet were calculated.
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Rolf Engleman (1985) studied this question.
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