Chemical Vapour Deposition

A plasma jet is a plasma source where a pair of metal electrodes with a sharp point, contained in a cylinder made of dielectric material, and is connected to a high voltage generator. A stream of Helium or Argon is blown in the insulated cylinder so that the electrode finds itself in contact with the gas. Due to the high electric field near the electrode’s sharp point, Helium or Argon ionizes and a mixture of electrons, ions and metastable atoms and molecules is blown by the flow stream towards the exit nozzle.