Patent ID: 7396415

Claim:
An apparatus for processing a substrate, comprising: a reaction chamber having an upstream end and a downstream end; a substrate holder positioned within the chamber between the upstream and downstream ends, the substrate holder configured to support a substrate so that the substrate is within a plane extending generally toward the upstream and downstream ends; a first injector component at the upstream end of the chamber, the first injector component configured to inject a first thin gas curtain toward a substrate supported by the substrate holder, the first injector component configured to inject the first curtain generally along a first plane that is parallel to a first side of the substrate; and a second injector component configured to inject a second thin gas curtain toward the first side of the substrate, the second injector component configured to inject the second gas curtain generally along a second plane oriented at an angle with respect to the first plane, wherein the first and second injector components are configured so that the first and second gas curtains intersect and mix together generally along and substantially throughout a line, wherein the second injector component is configured so that the line intersects a center of a circular substrate supported by the substrate holder.