MICROSCOPIC DESCRIPTION FOR MULTIPLE CHARGE TRANSFER IN THE COLLISION BETWEEN HIGHLY CHARGED ION AND ATOMIC CLUSTERS T. Tazawa$^1$, K. Yabana$^2$, P. Bozek$^3$ and Y.Abe$^4$ $^1$Department of Physics, Yamaguchi University, Yamaguchi, Japan $^2$Graduate School of Science and Technology, Niigata University, Niigata, Japan $^3$Cyclotron Laboratory, Michigan State University, East Lansing, U.S.A. $^4$Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto, Japan The collision between a cluster and a highly charged ion and the subsequ- ent production of the highly charged cluster are theoretically studied in the time-dependent local-density approximation. The multiple electron transfer passing over the saddle of the potential barrier is in good agreement with an estimate by a simple classical overbarrer model.