Design and characterization of a radio-frequency-powered glow discharge source for double-focusing mass spectrometers

Autor:	R. K. Marcus, T.A. Lewis, Douglas C. Duckworth, D.L. Donohue, David H. Smith
Rok vydání:	1993
Předmět:	Glow discharge Spectrometer business.industry Chemistry Analytical chemistry Plasma Analytical Chemistry Ion Modulation Electromagnetic shielding Optoelectronics Radio frequency business DC bias
Zdroj:	Analytical Chemistry. 65:2478-2484
ISSN:	1520-6882 0003-2700
Popis:	A radio-frequency- (rf-) powered glow discharge has been interfaced to a double-focusing mass spectrometer. This type of discharge allows direct analysis of nonconducting, as well as conducting, solids. The rf discharge source and electrical system overcome several problems which have inhibited success in prior efforts. Problems of inadequate rf shielding, maintaining the necessary dc bias potential on the sample surface, preventing rf modulation of ion energies, and coupling of the accelerating potential to the discharge are resolved. Representative spectra of glass, soil, and brass matrices are presented. Preliminary relative sensitivity factors for conducting and non-conducting matrices show relatively small differences in ion yields across the periodic table. 31 refs., 9 figs., 2 tabs.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0f691389b85734814e785d4ce04e4e5c https://doi.org/10.1021/ac00066a013 Zobrazit plný text záznamu