Non-dipole effects in photoelectron-monitored X-ray standing wave experiments: characterisation and calibration
UNSPECIFIED. (2001) Non-dipole effects in photoelectron-monitored X-ray standing wave experiments: characterisation and calibration. Surface Science, 494 (3). pp. 166-182. ISSN 0039-6028Full text not available from this repository.
The results are reported of a series of experiments designed to characterise and calibrate the role of non-dipolar (notably electric quadrupole-dipole interference) effects in the angular distribution of photoelectron emission on structural studies of surfaces using normal incidence X-ray standing wavefield absorption. The values of the resulting backward/forward asymmetry parameter (relative to the photon propagation direction) have been measured for Is emission at photon energies around 3 keV for first and second row elements from C to Cl. and are compared with recent theoretical determinations. The influence of additional non-dipole interference terms in the coherent X-ray standing wave has also been determined for the case of Al Ls emission and found to be weak. typically introducing systematic errors in atomic positions of only around 0.02-0.04 Angstrom. (C) 2001 Elsevier Science B.V. All rights reserved.
|Item Type:||Journal Article|
|Subjects:||Q Science > QD Chemistry
Q Science > QC Physics
|Journal or Publication Title:||Surface Science|
|Publisher:||ELSEVIER SCIENCE BV|
|Official Date:||1 December 2001|
|Number of Pages:||17|
|Page Range:||pp. 166-182|
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