DILEPTON PRODUCTION AND EMISSION OF FAST POSITRONS IN NUCLEUS-NUCLEUSCOLLISIONS

The method of distorted waves is used to obtain the differential cross section for fast-positron emission in collisions of intermediate-ener gy ions. Electron-positron pairs produced in the field of a dynamical dinuclear system are considered as the main source of positrons. Nucle us-nucleus interaction is taken into account within the optical model. It is shown that information about the properties of nucleus-nucleus interaction and about the structure of colliding particles can be dedu ced from the characteristics of leptons.