Kokusai Electric Co., Ltd.

Kenji Etoh

Satohiro Okayama

A substrate processing apparatus that includes an outer tank, an inner tank, and opposed electrodes. The inner tank is provided in the outer tank and the opposed electrodes are provided in the inner tank. A distance between the opposed electrodes can be changed in a state in which the inner tank can completely confine plasma therein. The inner tank includes first and second inner tank constituent members, and the state in which the inner tank can completely confine plasma therein is established by superposing a side wall of the second inner tank constituent member on a side wall of the first inner tank constituent member.

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Tokyo, Japan

Kenji Etoh