Emission Lines of Fe XIV, Fe XV, and Fe XVI in the Extreme Ultraviolet Region 40-100 Å

We report on emission spectra of iron in the extreme ultraviolet recorded at an electron density of ~10¹¹ cm^-3 on the Lawrence Livermore electron beam ion trap facility. We present a summary of the observed emission lines, including wavelengths and emission intensities, and present spectra of pure Fe XIV through Fe XVI emission derived from our measurements in the 40-100 Å wavelength range. We show that spectral models, especially the current version of CHIANTI v10.0, describe the M-shell emission from these three charge states of iron reasonably well, and we are able to verify several transitions in CHIANTI for the first time.