Theoretical analysis of solar corona spectra emitted in the 14--19 A wavelength range

The atomic data required to analyse low density coronal plasmas have been calculated and used to interpret some X‐ray spectra observed by the Flat Crystal Spectrometer of the SMM/NASA satellite in the 14–19 A wavelength range. The emission lines correspond mainly to Fe ions (Fe XVI, Fe XVII, Fe XVIII) and some O ions (O VII, O VIII).