Isolation valve

摘要

A valve for isolating the interior of a glow discharge chamber from the atmosphere and other reactants. The valve includes a body mounted in an aperture of the chamber. A slit-like opening is provided therein to allow the interior of the chamber to communicate with interrelated elements of a deposition system. A source is provided for introducing inert gas into the opening under pressure somewhat greater than that of reaction gases and plasma within the chamber to create an effective, non-reactive gas curtain.