The effect of solution temperature on the generation of cavitation bubble plasma was investigated for the purpose of improving the plasma generation rate in aqueous sodium chloride solution with a high conductivity. The number of discharge starting points, the number of continuous discharges and the amount of bubbles were evaluated as a function of the solution temperature. When the solution temperature was increased from 30 to 56 ℃, the plasma generation rate increased from 19% to 41%, and the

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... number of discharge starting points and the number of continuous discharges increased 1.5 times and 1.3 times, respectively. It was suggested that the increase in plasma generation rate was due to the increase in cavitation bubbles.