Dependence of the Properties of Moving Striations in the Plasma of the Positive Column on Some External and Internal Parameters
Dependence of the Properties of Moving Striations in the Plasma of the Positive Column on Some External and Internal Parameters
Oscillatory Phenomena in Direct Current Glow Discharges
In glow discharges having a positive column with a constant emf and a series resistance, oscillations usually are observed in tube voltage, current, and light intensity. While current and voltage oscillations represent a modulation of only a few percent, the intensity decreases to zero between maxima in the positive column, but there is an appreciable steady component near the cathode. The intensity maxima move as positive striations toward the cathode, or as negative striations with a much higher speed toward the anode. Where positive and negative striations meet they stop for times up to 100 \ensuremath{\mu}sec.
Oscillatory Phenomena of Arc in Hot Cathode Discharge Tube (1) Experimental (Characteristics of Oscillation)
The oscillatory phenomena are observed in a hot cathode discharge tube like fluorescent lamp. The oscillations occur in the vicinity of the anode, and are the periodical variation of the anode fall accompanied with a sudden ionization. The characteristics of the oscillations depends on the anode conditions as well as the thermoionic emissivity of the cathode.