Patent ID: 8092599

Claim:
An injector head for a rotating disk gas treatment reactor having a reaction chamber and a substrate carrier adapted to carry one or more substrates within the chamber rotatable about an axis of rotation, the injector head comprising: (a) a body having a central axis, the body being adapted for mounting to the reaction chamber with the central axis coincident with the axis of rotation of the substrate carrier, the body including: (i.) fixed first gas inlets connected to a source of a first gas, the fixed first gas inlets being arranged to discharge the first gas into the reaction chamber at fixed locations with a component of motion in the downstream direction toward the carrier and substrates; (ii.) fixed second gas inlets connected to a source of a second gas reactive with the first gas, the fixed second gas inlets being arranged to discharge the second gas into the reaction chamber at fixed locations with a component of motion in the downstream direction toward the carrier and substrates so that the first and second gases react with one another and form a deposit on the substrates; (b) at least one first movable gas inlet for discharging the first gas with a component of motion in a downstream direction towards the carrier and substrates, the first movable gas inlet being movable relative to the body with a component of motion towards or away from the central axis.