Glow discharge is a low-pressure gas discharge characterized by the presence of a luminous glow, typically seen in a plasma state when an electric field ionizes the gas. This phenomenon occurs when the gas is subjected to a voltage, causing electrons to collide with gas atoms, leading to ionization and creating a plasma with distinct properties. The glow discharge process is significant as it illustrates fundamental plasma behaviors, such as ionization and energy transfer, and is used in various applications like surface treatment and thin-film deposition.
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