Abstract
The shifts of all the strong emission lines of the neutral iron atom in hot compressed argon and helium (produced by a ballistic compressor) were measured in the region 2497–5900 Å. Curves showing the shift vs. relative density (r.d.) are presented for 68 of these lines with argom and 14 with helium, over a range of r.d. from 28 to 104 at 3230°K for argon and from 36 to 108 at 3600°K for helium. For argon, the relative displacements of various spectral terms of FeI with different J, L, S or electron configurations are discussed. A decrease in red shift was observed at higher temperatures.
Published Version
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