The Spark Spectrum of Iron, λλ 5016-7712 with Identifications of fe II Lines in the Solar Spectrum

The spectrum of iron from a strong spark discharge was examined in the region of wave length above X 5000. Wave lengths of i 27 lines due to ionized iron were obtained, in the main belonging to Fe u, although the structure of a few lines suggests Fe Hi as a possible origin. A comparison with the solar spectrum resulted in the identification of 78 lines in this region as dile at least in part to Fe ii. Of these, 37 were identified as Fe, ii in the Revised Rowland. Other solar lines were found to agree with Fe ii lines previously predicted from term values and now measured in the spark spectrum. In addition to the solar lines clearly identified, i~ Fe ii lines are masked by foreign lines, and their identifications are uncertain. Since a large proportion (31) of the lines identified as Fe ii have the faintest solar intensities (-2 and -3), the identification of solar Fe ii lines in this region is probably essentially complete. The lines measured in the spark spectrum include lines, some of them predicted, which are prominent in the spectra of novae