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Interferometric measurement of resonance transition wavelengths in C IV, Si IV, Al III, Al II, and Si II

Ulf Griesmann·Rainer Kling
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Abstract

We have made the first interferomeric measurements of the wavelengths of the important ultraviolet diagnostic lines in the spectra \ion{C}{4} near 155 nm and \ion{Si}{4} near 139 nm with a vacuum ultraviolet Fourier transform spectrometer and high-current discharge sources. The wavelength uncertainties were reduced by one order of magnitude for the \ion{C}{4} lines and by two orders of magnitude for the \ion{Si}{4} lines. Our measurements also provide accurate wavelengths for resonance transitions in \ion{Al}{3}, \ion{Al}{2}, and \ion{Si}{2}.

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Ulf Griesmann, Rainer Kling. 2000-04-13. Interferometric measurement of resonance transition wavelengths in C IV, Si IV, Al III, Al II, and Si II. https://doi.org/10.1086/312741

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