Kimitake Hayasaki (1,2), Atsuo T. Okazaki (3) ((1)Department of Applied Physics, Graduate School of Engineering, Hokkaido University, Kitaku N13W8, Sapporo 060-8628, Japan. (2)Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Hawthorn Victoria 3122 Australia (3)Faculty of Engineering, Hokkai-Gakuen University, Toyohira-ku, Sapporo 062-8605, Japan)
