Reassessment of energy transfers in the quasielastic scattering of 250–3000 eV electrons at surfaces
- 15 April 1993
- journal article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 47 (15), 9836-9839
- https://doi.org/10.1103/physrevb.47.9836
Abstract
Measurements are reported of the quasielastic scattering energy losses of electrons of 250–3000 eV from clean Cu, Ag, and Au in order to verify the large loss values recently observed by Erickson and Powell. Large loss values, if they were valid, would lead to a range of interesting analytical possibilities. However, here it is shown that the losses are small and are in agreement with the single-particle scattering model of Boersch et al. A null method is used which allows the energy of the unscattered beam to be referenced at each energy so that the energy losses may be determined directly with an accuracy of 15 meV. It is concluded that the measurements in the study of Erickson and Powell may have included a contribution from the cathode supply circuit that increased as the energy increased. The very low values of the losses observed here are predicted to be significant in surface analysis only for scattering from elements with atomic numbers less than 20.Keywords
This publication has 8 references indexed in Scilit:
- The physics of field emission in the context of vacuum microelectronicsSurface Science, 1991
- Quantitative AES and XPS: Determination of the electron spectrometer transmission function and the detector sensitivity energy dependencies for the production of true electron emission spectra in AES and XPSSurface and Interface Analysis, 1990
- Take‐off angle and film thickness dependences of the attenuation length of X‐ray photoelectrons by a trajectory reversal methodSurface and Interface Analysis, 1990
- Energy transfers in the quasielastic scattering of 70–1250-eV electrons by surfacesPhysical Review B, 1989
- Synchrotron radiation core level photoemission investigation of the initial stages of oxidation of Al(111)Surface Science, 1987
- Elastic backscattering of electrons from surfacesSurface Science, 1985
- A high resolution multipurpose ESCA instrument with X-ray monochromatorNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1984
- Elastische Energieverluste kristallgestreuter ElektronenThe European Physical Journal A, 1967