TRIPLE DIFFERENTIAL CROSS-SECTIONS IN ENERGY-SHARING SYMMETRICAL GEOMETRY FOR GOLD AND URANIUM AT RELATIVISTIC IMPACT ENERGIES

We report the results of fully relativistic distorted-wave calculation s for (e, 2e) collisions at high energies on gold and uranium targets in a coplanar symmetric geometry. The results for gold are in excellen t agreement with available absolute experimental data. We also observe a peak in the triple differential cross section at large angles which may be interpreted in terms of a multiple scattering mechanism. In th e present case of large impact energies, the ratio of the large angle to the binary peak is several orders of magnitude larger than that pre viously observed at non-relativistic energies. Our calculations indica te that this peak should be accessible to experiment. We propose a new geometrical arrangement for experiments which we believe offers disti nct advantages in the study of distortion effects in relativistic (e, 2e) processes.