Critical datasets for benchmarking atomic codes: Calibrated line intensities emitted by well-diagnosed solar plasmas

Abstract

The accuracy of available spectral codes is dependent on the quality of the atomic data and transition rates that they include, and can only be tested by benchmarking predicted line emissivities with observations from plasmas whose physical properties are known with precision. In the present work we describe a few high-resolution spectra emitted by solar flare plasmas under condition of ionization equilibrium, and one quiet Sun off-disk region spectrum, and we propose these datasets as benchmarks for the assessment of the accuracy of existing spectral codes in the 1.84–1.90 Å and 3.17–3.22 Å X-ray ranges and in the 500–1600 Å far ultraviolet range.