Physics of dischages occurring in liquids is not as clear as that in air. To make it clear, we investigate physical phenomena occurring around underwater discharge, such as prebreakdown phenomenon, generation of bubbles, and shock formation.

Development of underwater streamer is observed in detail by using the laser Schlieren method. As a result, we suggest a possible scenario of discharge process.


○Observation of Underwater Discharge Phenomena Using a Laser Schlieren Technique
Y. Mihara, S. Akamine, R. Ichiki, T. Sato, and S. Kanazawa
8th Asia-Pacific International Symposium on the Basis and Application of Plasma Technology (APSPT2013)

○Observation of Liquid-Gas Phase Dynamics from Pre-breakdown to Post-discharge in a Single-shot Underwater Pulsed Discharge
S. Kanazawa, Y. Ichihashi, S. Watanabe, S. Akamine, R. Ichiki, T. Ohkubo, T. Sato, M. Kocik, and J. Mizeraczyk
International Journal of Plasma Environmental Science & Technology 6, 49 (2012)

Updated in 27 Feb. 2015

---

Copyright (C) 2014- Oita University Kanazawa-Ichiki Lab. All Rights Reserved.