Abstract

A spectroscopic method, useful for strongly absorbed lines, has been investigated for measuring temperatures of hot gases. The minimum transmission of discrete spectral lines in gases at equilibrium has a simple dependence upon the absolute temperature and this relation is used to measure temperature from a straight line plot. An experimental study has been made of the absorption due to the rotational lines of OH (²∑←²Π) between 3067 and 3090 A in an oxygen-acetylene flame. It is shown that temperatures measured by this method are less affected than the conventional one by lack of sufficient resolving power, flame thickness, and various light sources (either continuous or line).

© 1956 Optical Society of America

Slit Function Effects in the Direct Measurement of Absorption Line Half-Widths and Intensities*†

Henry J. Kostkowski and Arnold M. Bass
J. Opt. Soc. Am. 46(12) 1060-1064 (1956)

Anode Temperatures and Characteristics of the dc Arc in Noble Gases*†

Bert L. Vallee and Milton R. Baker
J. Opt. Soc. Am. 46(2) 77-82 (1956)

Absorption Bands of Rubidium due to the Presence of Foreign Gases*

Shang-Yi Ch’en, Robert B. Bennett, and Oleg Jefimenko
J. Opt. Soc. Am. 46(3) 182-186 (1956)

Infrared Transmission of Synthetic Atmospheres.* II. Absorption by Carbon Dioxide

J. N. Howard, D. E. Burch, and Dudley Williams
J. Opt. Soc. Am. 46(4) 237-241 (1956)

Faraday Effect in Gases and Vapors. II*

L. R. Ingersoll and D. H. Liebenberg
J. Opt. Soc. Am. 46(7) 538-542 (1956)