Iron emission lines in solar and laboratory plasmas

Abstract

We present a spectrum of the Sun taken by the Cosmic Hot Interstellar Plasma Spectrometer (CHIPS) covering 150 to 275 Å. This spectrum is dominated in the 200 Å region by emission lines from intermediate charge states of iron (Fe VIII - FeXVI). We also made laboratory measurements of iron emission at temperatures relevent to solar emission on the EBIT-II electron beam ion trap and the Large Helical Device stellerator. We used our laboratory measurements to identify lines and check the CHIANTI database and then used CHIANTI to validate line identifications in the CHIPS spectrum. © 2008 IOP Publishing Ltd.