Patent ID: 8261691

Claim:
A plasma processing apparatus comprising: a vacuum evacuable processing chamber; a first electrode configured to mount thereon a substrate to be processed in the processing chamber; a second electrode facing the first electrode in parallel in the processing chamber; a processing gas supply unit configured to supply a processing gas to a processing space between the first and the second electrodes; a first high frequency power supply configured to apply a first high frequency power for generating, in the processing space, a plasma of the processing gas to at least one of the first and the second electrodes; a cavity plasma generation unit, having a cavity formed in one of the first and the second electrodes, configured to generate, in the cavity, a plasma of a discharging gas; and an insulator member provided on a main surface of said one of the first and the second electrodes including the cavity to separate a space in the cavity from the processing space such that the cavity is not in fluid communication with the processing space.