Patent attributes
An apparatus includes: a rotatable table for revolving a substrate mounting region on which a substrate is mounted; a first gas supply part for supplying a source gas to a first region through an injection portion formed to face the rotatable table; an exhaust part for exhausting a gas through an exhaust port; a second gas supply part for supplying an separation gas for separating inner and outer sides of a second closed path from each other through an separation gas supply port formed to extend along the second closed path surrounding the exhaust port; a third gas supply part including two gas injectors arranged to extend at a certain interval in a direction crossing the revolutional direction with a second region defined outside the second closed path interposed between the gas injectors; and a plasma generation part for plasmarizing a reaction gas.