Abstract

The spectra for the halogens were excited in a Stallwood jet using a dc arc between 1% thoriated tungsten electrodes. The shield gases were helium, 50% argon-50% helium, and argon. In helium, only atomic lines of fluorine were excited, some singly ionized lines of chlorine were excited, and the atomic lines of iodine were weak. Atomic lines of fluorine were faintly visible in argon while the atomic lines of chlorine, bromine, and iodine showed an increasing intensity in 50% argon-50% helium, and argon, respectively.

Effects of Inert Atmospheres on Emission Spectra in the Interrupted Arc

H. Stone
J. Opt. Soc. Am. 44(5) 411-413 (1954)

Online detection of halogen atoms in atmospheric VOCs by the LIBS-SPAMS technique

Qihang Zhang, Yuzhu Liu, Yu Chen, Yuanzhe Zhangcheng, Zeming Zhuo, and Lei Li
Opt. Express 28(15) 22844-22855 (2020)

Effects of Inert Gases on dc Arc Discharge

Bert L. Vallee and S. James Adelstein
J. Opt. Soc. Am. 45(1) 63_1-63 (1955)

Jet-Controlled Arc: I, Excitation of Second Spectra

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

Enhancement of the 2062-Å Atomic-Iodine Line in an Iodine Inert-Gas Flashlamp

Algird G. Leiga and John A. McInally
J. Opt. Soc. Am. 57(3) 317-322 (1967)