Optimization of an rf-powered magnetron glow discharge for the trace analysis of glasses and ceramics.
Anal Bioanal Chem
; 355(7-8): 831-5, 1996 Jul.
Article
em En
| MEDLINE
| ID: mdl-15045274
ABSTRACT
A radiofrequency (rf) powered planar magnetron glow discharge ion source has been designed and coupled to a double-focusing mass spectrometer. Superposition of the electrical field of the plasma in the cathode dark space and the magnetic field obtained from a ring-shaped magnet located directly behind the sample (cathode) form the electron traps and enhance the sputtering and ionization efficiency of the ion source. In order to establish optimum conditions for the trace analysis of nonconducting materials, mass spectrometric studies have been carried out on the ion signal intensities and energy distributions of analyte and discharge gas ions depending on pressure.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Anal Bioanal Chem
Ano de publicação:
1996
Tipo de documento:
Article
País de afiliação:
Alemanha