J. Phys. IV France
Volume 09, Numéro PR6, June 1999
International Conference on Coincidence Spectroscopy
Page(s) Pr6-209 - Pr6-213
International Conference on Coincidence Spectroscopy

J. Phys. IV France 09 (1999) Pr6-209-Pr6-213

DOI: 10.1051/jp4:1999645

Recoil-free relativistic (e,2e) collisions

C.D. Schröter

Physikalisches Institut der Universität Tübingen, Auf der Morgenstelle 14, 72076 Tübingen, Germany

We report here on (e,2e) measurements at relativistic electron energies (up to 500 keV) under 'boundelectron Bethe ridge' conditions. Absolute triple differential cross sections for K-shell ionization of silver (Ebind=25.5 keV) have been measured. Appreciable discrepancies are found with calculations in the relativistic distorted-wave Born approximation whereas results of the Coulomb-Born approximation give better accord with the experimental data. At the highest incident energy (500 keV) the Coulomb-Born approximation is in perfect agreement with the experimental results.

© EDP Sciences 1999