1. Institute of Pulsed Power Science, Kumamoto University, Kumamoto 860-8555, Japan
2. Sojo University, Kumamoto 860-0082, Japan
3. Ben-Gurion University of the Negev, P.O. Box 653, Beer Sheva 84105, Israel
4. Itochu Techno-Solutions Corporation, Tokyo 100-6080, Japan
5. Kyushu University, Fukuoka 812-8581, Japan