We have developed an original stereogram-like observation method of 3D structures of streamer dischargs. Our 3D observation method reveals detailed channel structures and branch angles.

3D Observation for Atmospheric Streamers

The propagation velocity and branch angle of atmospheric streamer channels are measured precisely using our 3D observation method.


3D reconstracted images of atmospheric streamer channels

○Observing Three-Dimensional Structures of Streamer Discharge Channels
R. Ichiki, S. Kanazawa, K. Tomokiyo, H. Hara, S. Akamine, M. Kocik, and J. Mizeraczyk
IEEE Transactions on Plasma Science 39, 2228 (2011)

○3D Observation Method for Propagating Channels in Streamer Discharges [in Japanese]
R. Ichiki, S. Kanazawa, K. Tomokiyo, H. Hara, S. Akamine, M. Kocik, and J. Mizeraczyk
IEEJ Transactions on Fundamentals and Materials 130, 683 (2010)

3D Observation for Underwater Streamers

Generation and propagation mechanism of underwater discharges are still lively questions. To contribute such area, we utilized our 3D method to underwater streamers. As a result, the branch angle proved to depend on the electric conductivity of water medium.


3D reconstructed image and conductivity dependence of branch angle for underwater streamers

○Statistical Analysis of Branch Phenomena in Underwater Streamers [in Japanese]
R. Ichiki, S. Kanazawa, K. Tomokiyo, S. Akamine, M. Kocik, J. Mizeraczyk
Technical Meeting, IEE Japan, PPT-12-102 (2012)
PDF file

○Investigation of Three-Dimensional Characteristics of Underwater Streamer Discharges
R. Ichiki, S. Kanazawa, K. Tomokiyo, S. Akamine, M. Kocik, and J. Mizeraczyk
Japanese Journal of Applied Physics 51, 106101 (2012)
Updated in 24 Feb. 2015
Copyright (C) 2014- Oita University Kanazawa-Ichiki Lab. All Rights Reserved.