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PLASMA GENERATING METHOD INCLUDING GENERATING FIRST PLASMA WITHOUT SUPPLYING FIRST GAS IN LIQUID AND GENERATING SECOND PLASMA IN FIRST GAS, AND PLASMA GENERATING APPARATUS
PLASMA GENERATING METHOD INCLUDING GENERATING FIRST PLASMA WITHOUT SUPPLYING FIRST GAS IN LIQUID AND GENERATING SECOND PLASMA IN FIRST GAS, AND PLASMA GENERATING APPARATUS
A plasma generating method, used in a plasma generating apparatus which includes a container, a first electrode, and a second electrode, includes: supplying a liquid in the container so that the second electrode is in contact with the liquid; in a first period, generating first plasma in a bubble generated in the liquid by applying a first voltage between the first electrode and the second electrode; supplying a first gas in the liquid in a second period after the first period; and generating second plasma in the first gas by applying a second voltage between the first electrode and the second electrode. In generating the first plasma, the first gas is not supplied in the liquid. The bubble contains a second gas.
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