Abstract

Experimentally determined sensitivity factors for the rare earths in Y₂O₃ are presented along with computed values based upon some electrical and physical properties of the elements and compounds. The sample electrodes consisted of 2 mol of pelletizing graphite and 1 mol of Y₂O₃ powder. The properties considered are (1) the heat of formation of the gaseous metal, (2) the dissociation energy of the monoxide, (3) the ionization potential of the metal, and (4) the experimentally determined charge distribution of the metal ions in the rf spark ion source. Even for the rare earths, a class of elements with similar chemical and electrical properties, the experimentally determined and computed sensitivity factors differ by as much as a factor of 6 from one another.

The Quantitative Spectrographic Analysis of the Rare Earth Elements*I. Determination of Samarium in NeodymiumII. Determination of Europium in Samarium

Velmer A. Fassel and Harley A. Wilhelm
J. Opt. Soc. Am. 38(6) 518-526 (1948)

The Quantitative Spectrographic Analysis of the Rare Earth Elements* III. Determination of Major Constituents in Complex Mixtures

Velmer A. Fassel
J. Opt. Soc. Am. 39(2) 187-193 (1949)

Time-Resolved Spectra of Rare-Earth Ions*

W. A. Hovis
J. Opt. Soc. Am. 52(6) 649-655 (1962)

Univariate and multivariate analyses of rare earth elements by laser-induced breakdown spectroscopy

Chet R. Bhatt, Fang Y. Yueh, and Jagdish P. Singh
Appl. Opt. 56(8) 2280-2287 (2017)

Ultraviolet Irradiation of Interrupter Gaps in Spectrographic Spark Sources

S. F. Simpson
J. Opt. Soc. Am. 35(1) 40-42 (1945)