New measurements of 26 spectral lines of highly ionized Fe in the range of 91–263 Å have been carried out with a wavelength uncertainty of ±5 mÅ. The light source was the TEXT tokamak at the University of Texas in Austin. Lines of Be-like, B-like, C-like, and N-like Fe are included, with visually estimated intensities, the best previous measurements, and energy-level classifications. Level values are derived from these wavelengths and from known magnetic dipole (M1) lines.
© 1995 Optical Society of America
Jack Sugar and William L. Rowan, "Improved wavelengths for prominent lines of Fe XX to Fe XXIII," J. Opt. Soc. Am. B 12, 1403-1405 (1995)