University of Science and Technology of China, Hefei 230026;
Advanced Center for Earth Science and Astronomy, Third World Academy of Science;
University of Science and Technology of China, Hefei 230026;
Advanced Center for Earth Science and Astronomy, Third World Academy of Science;
University of Science and Technology of China, Hefei 230026;
Advanced Center for Earth Science and Astronomy, Third World Academy of Science;
comet - plasma - dust grains - charging - equilibrium potential;