The following is an abstract for the selected article. A PDF download of the full text of this article is available here. Members may download full texts at no charge. Non-members may be charged a small fee for certain articles.
Investigations of a Magnetically Enhanced Grimm-Type Glow Discharge Source
Volume 49, Number 2 (Feb. 1995) Page 241-246
Heintz, Mark J.; Mifflin, Kimra; Broekaert, Jose A.C.; Hieftje, Gary M.
The application of a magnetic field to the Grimm glow discharge lamp in order to enhance its sputtering rate and emission characteristics for optical emission spectrometry was investigated. A Nd-Fe-B magnet was placed behind samples of copper and Monel 400 (a Cu-Ni-Fe alloy) having thicknesses of 1.0-1.5 mm. The sputtering rates (at 1000 V in argon at 4 Torr) for copper could be increased from 100 to 200 μg/min under the influence of the magnetic field. The noise behavior of the atomic emission was found to be influenced slightly by the application of the magnetic field. For the nonresonance Cu(I) line emission at 282.4 nm, an increase in intensity occurred in accordance with the increase in sputtering rate, whereas for resonance lines [Cu(I) 324.7 nm in the case of copper samples and Cr(I) 425.7 nm for Monel 400 containing 0.06% (w:w) Cr], a drop in the atomic emission was found upon application of the magnetic field. This result is thought to be due to self-absorption, which has been shown to occur in a Grimm-type glow discharge source.