Stopping power of ions in a magnetized two-temperature plasma

Using the dielectric theory for a weakly coupled plasma, we investigate the stopping power of an ion in an anisotropic two-temperature electron plasma in the presence of a magnetic field. The analysis is based on the assumpti on that the energy variation of the ion is much less than its kinetic energ y. A general expression for the stopping power is analyzed for weak and str ong magnetic fields (i.e., for the electron cyclotron frequency less than a nd greater than the plasma frequency), and for low and high ion velocities. It is found that the usually velocity independent friction coefficient con tains an anomalous term which diverges logarithmically as the projectile ve locity approaches zero. The physical origin of this anomalous term is the c oupling between the cyclotron motion of the electrons and the long-waveleng th, low-frequency fluctuations produced by the projectile ion.