Patent ID: 8877000

Claim:
A plasma processing system comprising: a plasma processing chamber including a plurality of continuous flow shower-head orifices; plural pulsed high-pressure injectors interspersed between the plurality of continuous flow shower-head orifices; said plural pulsed high-pressure injectors each being separately connected to a gas feed line; said plurality of continuous flow shower-head orifices being connected to a common volume; at least one continuous flow gas valve configured to provide a first gas to the chamber via the common volume and the continuous flow shower head orifices; at least one pulsed gas valve configured to provide a second gas to the chamber via at least one of the gas feed lines and its respective pressure injector; and a controller coupled to each gas valve and programmed to cause the continuous flow gas valve to provide the first gas in a continuous flow having a flow rate of 100-500 sccm and to cause the pulsed gas valve to provide the second gas in a pulsed flow, each pulse having a flow rate of 1,000-10,000 sccm such that, during each pulse, gas transport adjacent to a surface of a substrate being processed affects at least one of an increase in local number density of adatoms, or an increase in probability of adatoms moving in a direction normal to the surface, to improve processing within high aspect ratio features in the substrate.