Affiliation: | CAO XIAO-WEN FENG SHANG-SHEN(Institute of Plasma Physics, Academia Sinica, Hefei 230031, PRC)LONG XIANG-YUN WU YU-SHENG PENG HUO-TIAN QI ZHI-WEI PENG QIU-YUN AND FANG JUN-REN(Changsha Research Institute of Mining and Metallurgy, Changsha 410012, PRC) |