Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5397042 | Journal of Electron Spectroscopy and Related Phenomena | 2007 | 5 Pages |
Abstract
Core-level photoemission from N2 can be considered as an analogue of Young's double-slit experiment (YDSE) in which the double-slit is replaced by a pair of N 1s orbitals. N 1s photoelectron spectra of N2 are measured in the extended photon energy region up to â¼ 1âkeV at unprecedented resolution. The measured ratio between the 1Ïg and 1Ïu photoionization cross-sections oscillates as a function of electron momentum due to interference effects analogue to YDSE. We found a shift of the interference pattern with respect to a prediction by a simple model for coherent two-center emission, the Cohen-Fano formula, and attributed it to photoelectron scattering by the neighboring atom. We demonstrate that the shift can be used to determine the scattering phase of the photoelectron.
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Authors
X.-J. Liu, G. Prümper, F. Gel'mukhanov, N.A. Cherepkov, H. Tanaka, K. Ueda,