Excitation of atomic emission lines of nitrogen in steel by means of a high-energy, single-discharge source

Emission Spectroscopy

“…Work is continuing on measurements of this type as a necessary preliminary to adoption of an international wave length standard for length measurements. Meggers and Stanley {169) have published 222 vacuum wave lengths of thorium spectra excited in a thorium iodide lamp; these are proposed as reference standards for more accurate measurement of wave lengths in the complex spectra of the heavy elements. Meissner and Kaufman {170) report interference measurements at great retardations obtained with a calcium atomic beam source.…”

“…Koch, Eckhard, and Striker (142) report a rapid spectrometric method for determining carbon monoxide, nitrogen, and hydrogen in steel with only 20 seconds required per determination. Runge and Bryan (222) excite and determine nitrogen spectrographically by direct spark excitation of the steel sample with a coefficient of variation of 17%• The spectrographic determination of nitrogen in steels is treated in a 101-page dissertation by Jasinski (113). Hydrogen is determined in steels by Zaídel and Petrov (275) by equilibrating the hydrogen of the sample with a certain quantity of deuterium, and the equilibrated gas is analyzed spectrometrically for the H/D ratio.…”