neutral plasma

Neutral plasmas in contact with a solid surface (that is, most laboratory plasmas) are typically non-neutral in their edge regions.

Non-neutral plasmas for which all species have the same sign of charge have exceptional confinement properties compared to neutral plasmas.

Consider an electrically neutral plasma in equilibrium, consisting of a gas of positively charged ions and negatively charged electrons.

When a non-neutral plasma is cooled to cryogenic temperatures, it does not recombine to a neutral gas as would a neutral plasma, because there are no oppositely charged particles with which to recombine.

The PlasmaJet is currently cleared and available for use in the United States as a neutral plasma surgery system designed for cutting, coagulation and the removal of soft tissue by vaporization in open surgery and laparoscopic surgery.

The plasma exits the anode nozzle as a free or neutral plasma flame (plasma which does not carry electric current) which is quite different to the Plasma Transferred Arc coating process where the arc extends to the surface to be coated.