Technique for the analysis of insulating materials by glow disch

Details Technique for the analysis of insulating materials by glow disch Technique for the analysis of insulating materials by glow disch

1991-02-14

1992-01-14

Berman, Jack I.

Radiant energy

Ionic separation or analysis

Methods

250288, 250304, H01J 4904

Patent

active

050813528

ABSTRACT:
The present invention describes a technique for sample preparation and analysis of ceramics and oxides. The technique involves mixing the ceramic or oxide powder with a conducting powder such as gallium, indium or silver and adding a small amount of dopant. The dopant comprises approximately 5-30% by weight of the sample and is selected from the group comprising thoria, yttria or ytterbia. It is theorized that the addition of the dopant provides a source of electrons that stabilizes the plasma in the glow discharge mass spectrometer which allows for impurity analysis in the part-per-million range.

REFERENCES:
patent: 4912324 (1990-03-01), Clark et al.
patent: 5006706 (1991-04-01), Marcus

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