title: MULTISTATE QUASIMOLECULAR BASIS TREATMENT OF $He^{2+} - C^{3+}$ COLLISIONS. DIFFERENTIAL AND TOTAL CROSS SECTIONS author: V.K.Nikulin affilations: A.F.Ioffe Physical-Technical Institute, St.Petersburg 194021, Russia summary: Partial cross sections for charge-exchange and excitations in $He^{2+}$--$C^{3+}(1s^22s)$ slow collisions have been computed by using close-coupling equation method, the collision system having been treated as 3--electron system. Angular differential cross sections have been calculated within impact--parameter eikonal approximation.