J. Phys. IV France 09 (1999) Pr6-209-Pr6-213
Recoil-free relativistic (e,2e) collisionsC.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