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Plasma sources generate plasmas.
Additional recommended knowledge
Excitation of a plasma requires partial ionisation of neutral atoms and/or molecules of a medium. There are several ways to cause ionisation: collisions of energetic particles, strong electric fields acting on bond electrons, or ionising radiation. The kinetic energy for ionising collisions may come from the heat of chemical or nuclear reactions of the medium, as in flames, for instance. Alternatively, already released charged particles may be accelerated by electric fields, generated electromagnetically or by radiation fields. If at least as many charge carriers are created per time unit as recombine, the plasma can be sustained.
Plasma excitation by electromagnetic fields can be classified according to:
Plasma sources have numerous technical applications, for instance in light generation and plasma processing of materials.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Plasma_source". A list of authors is available in Wikipedia.|