Glow discharge tube for spectral analysis

Details Glow discharge tube for spectral analysis Glow discharge tube for spectral analysis

G - Physics

01

N

341/39, 73/55

G01N 21/25 (2006.01) G01N 21/67 (2006.01) H01J 61/28 (2006.01)

Patent

CA 1215247

ABSTRACT A glow discharge tube for emission spectral analysis of reduced measurement error, with an anode or main region, connected to a carrier gas supply to a first vacuum pump, and through a choke to a cathode region. A second vacuum pump producing a higher vacuum than the first pump is connected to the cathode region. The gas pressure in the anode region is kept constant by electronic control of the quantity of carrier gas supplied to the anode region.

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