Patent ID: 8864932

Claim:
A plasma processing apparatus, comprising: an evacuatable processing chamber in which a processing target substrate is placed; a first electrode disposed inside said processing chamber; a second electrode disposed to face opposite said first electrode and supports the substrate; a first high-frequency power source that applies first high-frequency power to said first electrode; a second high-frequency power source that applies second high-frequency power with a frequency lower than the first high-frequency power to said second electrode; a DC power source that applies a DC voltage to said first electrode; a processing gas supply means for supplying a specific processing gas into said processing chamber; a temperature adjustment device that adjusts the temperature of said first electrode by circulating a heating medium with the temperature thereof adjusted to a predetermined level through a circulating passage formed in said first electrode; and a control unit that executes control for temperature adjustment for said heating medium when processing the substrate based upon a heating medium target temperature to be achieved by said heating medium to adjust the temperature of said first electrode to a predetermined temperature setting, calculated based upon, at least, the high-frequency power to be applied to the individual electrodes and the DC voltage to be applied to said first electrode, wherein: said control unit is configured to calculate the heating medium target temperature based upon a predetermined arithmetic operation expression for determining a temperature difference between said predetermined temperature setting for said first electrode and said heating medium target temperature; said predetermined arithmetic operation expression in the control unit includes a first high-frequency power-based term, a second high-frequency power-based term and a DC voltage-based term; and said DC voltage-based term is constituted with a multiplicative term in which the DC voltage and the second high-frequency power are multiplied by each other to form a product HV×B, where B is the second high-frequency power applied to the second electrode to which the DC voltage is not applied and HV is the DC voltage which is equal to or higher than 500 V and is applied to the first electrode.