A steady-state one atmosphere uniform DC glow discharge plasma

Abstract

Summary form only given. We have produced a one-atmosphere DC glow discharge plasma with a density (so far) of 10/sup 11//cm/sup 3/. The basic discovery is twofold: First, we have found a theorem that shows that any complex AC geometry containing materials of varying dielectric constant can be replaced by a DC system containing materials of varying electrical conductivity. The geometries of the electric field lines are identical, as long as the varying permittivity in the AC system is matched by the varying conductivity in the DC system: Second, we have found a suitable electrode material for the DC case that replaces the dielectric-coated metal electrodes for the AC case. This new electrode material is inexpensive and robust. This new material is presently proprietary (a patent is pending), but is to be discussed at ICOPS. In addition, we intend to present photographs of the apparatus in operation, as well as samples of the new electrode material. The advantages of a DC system over an AC system are that it is less expensive and more efficient, as no RF power supply is necessary. Actually, 60 Hz line power can also be used, and a simple neon sign transformer suffices for experimental work. This plasma can be used for chemical and biological decontamination, as well as surface modification.