DICLUSTER STOPPING IN A 2-DIMENSION ELECTRON FLUID

The strongly correlated stopping of two point-like charges flowing in close vicinity in an electron fluid confined to a plane is investigate d within a RPA framework for the target material. A specific attention is given to the stopping of diclusters randomly oriented with respect to their overall constant drift velocity. Analytic expressions for th e correlated energy loss are detailed at high and low projectile veloc ities V. The ratio of correlated to uncorrelated stopping is shown ind ependent of target electron density at high V values. (C) 1998 Elsevie r Science B.V. All rights reserved.