Abstract

Spectra produced in the d.c. arc with graphite or carbon electrodes suffer from cyanogen interference between 3500 and 4150 <i>A</i> as well as poor line-to-background ratio in the ultraviolet region (1). In order to take advantage of the sensitivity of the d.c. arc method, a chamber for exciting the sample in a nitrogen-free controlled atmosphere eliminates the cyanogen interference and increases the line-to-background ratio.

Chamber for Controlled Atmosphere Spectral Excitation

Louis E. Owen
J. Opt. Soc. Am. 41(2) 139-139 (1951)

A D.C. Arc Source and Automatic Controller*

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

Jet-Controlled Arc: I, Excitation of Second Spectra

Kenneth H. Thygesen and Frank L. Moore
Appl. Opt. 2(6) 635-637 (1963)

Carbon Arc in a Controlled Atmosphere as a Radiation Standard*

Robert R. Jayroe and R. G. Fowler
J. Opt. Soc. Am. 57(4) 513-516 (1967)

Jet-Controlled Arc II: Excitation of Third Spectra

F. L. Moore, K. H. Thygesen, C. C. Derwin, and M. E. Eward
Appl. Opt. 3(1) 93-95 (1964)