[16a-P06-1~6] 1.6 Ultrasonics

[16a-P06-1] Bjerknes force and electrification of a sonoluminescing bubble

〇Yuya Kageyama¹, Hyang-Bok Lee², Pak-Kon Choi¹ (1.Meiji Univ., 2.Japan Women's Univ.)

Keywords:sonoluminescence

From the behavior of the bubbles when an external electric field was applied to a single bubble trapped in the ultrasonic standing wave, it was experimentally shown that the single bubble was positively charged. As a result of the Bjerknes force acting from the standing wave sound pressure, the bubbles are trapped in the sound pressure antinode. Since the trap position is moved by the Coulomb force generated by the electric field, the amount of charge should be evaluated by obtaining the Bjerknes force. In this study, the Bjerknes force acting on the bubbles was calculated to evaluate the amount of charge.