Abstract

When the Constant Temperature D. C. Arc Method <i>(1,2)</i> was applied, following the procedure of Eichoft and Addink <i>(3),</i> to prism spectrographs not considered by these authors, distinct anomalies were found. The instruments in question were Soviet medium quartz prism ISP-22 and Soviet Littrow KSA-1 spectrographs. (For a brief description of these Russian instruments, see <i>(4)).</i> The conversion factors (C. F.) were found not to be constant over the wavelength range of 2500 to 3500 A, and the instruments behaved as if the conversion factor was a function of wavelength. Because both spectrographs were prism instruments one would expect the conversion factor to be equal to unity over the whole wavelength range being examined <i>(3).</i> However, it was experimentally shown that the conversion factor increased as the wavelengths became shorter.

A D.C. Arc Source and Automatic Controller*

G. H. Fetterley and W. M. Hazel
J. Opt. Soc. Am. 40(2) 76-79 (1950)

The Spectrographic Detection of Selenium in the D.C. Arc Flame*

Cyrus Feldman
J. Opt. Soc. Am. 35(2) 180-184 (1945)

The Influence of Argon, Helium, Oxygen, and Carbon Dioxide on Emission Spectra in the D.C. Arc*

Bert L. Vallee, Charles B. Reimer, and John R. Loofbourow
J. Opt. Soc. Am. 40(11) 751-754 (1950)

Note on the Temperature Determination of the Iron Arc and the Derivation of the f Values

V. Letfus
J. Opt. Soc. Am. 51(10) 1151-1151 (1961)

Infrared optical constants and roughness factor functions determination: the HTHRTR method

Marta Klanjšek Gunde and Boris Aleksandrov
Appl. Opt. 30(22) 3186-3196 (1991)