Patent · US Expired

Glow discharge source for elementary analysis

US6822229B2 · kind B2 · utility

2Cited by

6References

7Claims

0Family size

Assignees

Institut fuer Festkoerper-und Werkstoffforschung Dresden e.V. · DE
Klaus Wetzig · DE

Inventors

Ludger Wilken · Berlin, DE
Volker Hoffmann · Hemmingen, DE
Peter Geisler · Darmstadt, DE
Klaus Wetzig · Dresden, DE

Key dates

Filing date	Dec 30, 2002
Grant date	Nov 23, 2004
Priority date	—
Expiry date	Dec 30, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH01J49/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A glow discharge source for the elemental analysis of solid samples of material by means of optical glow discharge spectroscopy (GD-OES) or glow discharge mass spectroscopy (GD-MS) or secondary neutral particle mass spectroscopy (SNMS), a glow discharge being produced by means of a connected electrical voltage source on the sample of material between the latter and an anode and evaluated spectrometrically, wherein a current transformer component for detecting the current flowing between the glow discharge and the voltage source is disposed at or in the anode or connected electrically with the anode.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.