Low Velocity Ion Stopping in a Strongly magnetized Plasma

We focus attention on low velocity stopping of heavy ions in a strongly magnetized electron-ion plasma target considered in a guiding center approximation with electron Larmor radius much shorter than correponding Debye length. Elaborating on an exact equivalence between low velocity stopping and particle diffusion through the magnetic field B [1],we can proceed to an analytic determination of the given friction coefficient pertaining to a stopping power~projectile velocity. The latter emboddies a combination of hydrodynamical in 1/B and kinetic in 1/B$^2$ contributions. It is appropriate to use effective interactions regularizing quantum-mechanically the short range electron-ion interaction [2] \newline \newline [1] Y. Furutani, Y. Oda, C.Deutsch and M.M. Gombert, Phys Rev 26A,2913 (1982) \newline [2] C Deutsch,Phys Lett A60,317[1977)