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Polymerization is likely to take place through either ionic and/or radical processes which are initiated by plasma formed from the glow discharge. [1] The classic view presented by Yasuda [ 14 ] based upon thermal initiation of Parylene polymerization is that there are many propagating species present at any given time as shown in Figure 3.
The simplest type of glow discharge is a direct-current glow discharge. In its simplest form, it consists of two electrodes in a cell held at low pressure (0.1–10 torr; about 1/10000 to 1/100 of atmospheric pressure).
Also within the bulb were metal sculptures coated with phosphors. These phosphors fluoresced when excited by glow discharge. Because glow discharge occurs readily at 110-120 volts AC, one could use these bulbs in standard household lamps in the United States. The phosphors used in the bulbs were somewhat brittle, necessitating care in handling.
Electrostatic discharge materials (ESD materials) are plastics that reduce static electricity to protect against damage to electrostatic-sensitive devices (ESD) or to prevent the accidental ignition of flammable liquids or gases.
A flicker light bulb, flicker flame light bulb or flicker glow lamp is a gas-discharge lamp which produces light by ionizing a gas, usually neon mixed with helium and a small amount of nitrogen gas, by an electric current passing through two flame shaped electrode screens coated with partially decomposed barium azide. The ionized gas moves ...
English: A classic glow discharge in a Crookes tube, a glass gas discharge tube evacuated to a pressure of around 10-5 - 10-6 torr, with a metal electrode inside at either end. The glow is due to a voltage of several thousand volts applied between the electrodes, which causes the gas inside the tube to ionize, allowing a current to pass through it.
English: Diagram of the structure of a glow discharge, showing the names of the different glowing regions in the gas and graphs showing how the potential (V), electric field (E), charge density (n), and current density vary along the tube.
When using a high-frequency alternating voltage for plasma generation and the corresponding construction of the glow discharge source, non-metallic samples can also be examined. Various instruments are used as sensors. Photomultipliers can detect the slightest traces and also high concentrations of the sensor-specific element.