The desirability of very high temperature sources for infra-red spectroscopy is pointed out. The crater radiation of the low intensity carbon arc is examined and recommended for practical use in this application. Details of arc mounting and use are given.
C. S. RUPERT and JOHN STRONG, "The Carbon Arc as an Infra-Red Source," J. Opt. Soc. Am. 40, 455-458 (1950)