Patent ID: 8137463

Claim:
An apparatus for processing a substrate, comprising: a chamber body defining a process volume; an injection nozzle assembly at least partially disposed in the process volume, wherein the injection nozzle assembly comprises a nozzle at least partially disposed in the process volume, wherein the nozzle has a substantially cylindrical body, a first plurality of injection ports formed through a bottom of the cylindrical body, and a second plurality of injection ports formed through a sidewall of the cylindrical body, wherein the first and second plurality of injection ports are open to the process volume, and the injection nozzle assembly has: a first fluid path including a first inlet configured to receive a fluid input, and the first plurality of injection ports connected with the first inlet, wherein the first plurality of injection ports are configured to direct a fluid from the first inlet towards a first region of the process volume, and a second fluid path including a second inlet configured to receive a fluid input, and the second plurality of injection ports connected with the second inlet, wherein the second plurality of injection ports are configured to direct a fluid from the second inlet towards a second region of the process volume; and a flow control unit connected between a fluid source and the first and second inlets of the injection nozzle assembly, wherein the flow control unit is configured to split an incoming flow into a first output flow and a second output flow, wherein the ratio of the first output flow and the second output flow is adjustable.