| abstract |
In the present invention, inside a main body part (12) formed from an insulator material, water (50) is made to flow such that a predetermined space is left inside. Electrodes (14, 16) are arranged along an external wall surface of the main body part, and a voltage is applied to the electrodes. This turns a processing gas (56) present inside the main body part into plasma, and the water flowing inside the main body part becomes irradiated by the plasma. This allows the electrodes and the water subjected to the treatment to be separated, and contamination by impurities in a liquid due to melting of an electrode, or the like, needs not to be taken into consideration. In addition, plasma irradiation onto a flowing liquid allows the plasma to be irradiated onto a large amount of the liquid, allowing plasma-treated water to be generated efficiently. In addition, plasma irradiation onto the flowing liquid enables the suppression of a rise in temperature of the liquid due to the irradiation of the plasma. |