Principles of the glow-discharge

The key to the success of GD is the ease with which it can create an atom reservoir of the sample material directly from the solid state. There are many types of glow-discharge [130], including the common neon light. 

Devices for treatment prior to introduction into atomic spectrometers 

Almost all the discharge potential is dropped across the cathode fall (dark space), a region very close to the cathode surface. Argon ions are accelerated across this dark 

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