Interferometric measurement of resonance transition wavelengths in CIV, SiIV, AlIII, AlII, and SiII

被引:46
作者
Griesmann, U [1 ]
Kling, R
机构
[1] NIST, Gaithersburg, MD 20899 USA
[2] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA
关键词
atomic data; methods : laboratory; techniques : spectroscopic;
D O I
10.1086/312741
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We have made the first interferomeric measurements of the wavelengths of the important ultraviolet diagnostic lines in the spectra C Iv near 155 nm and Si Iv near 139 nm with a vacuum ultraviolet Fourier transform spectrometer and high-current discharge sources. The wavelength uncertainties were reduced by 1 order of magnitude for the C Iv lines and by 2 orders of magnitude for the Si Iv lines. Our measurements also provide accurate wavelengths for resonance transitions in Al III, Al II, and Si II.
引用
收藏
页码:L113 / L115
页数:3
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