Beyond the Dipole Approximation: Angular-Distribution Effects in Valence Photoemission
- Hemmers, Oliver
- Fisher, G. R.
- Glans, P.
- Hansen, D.
- Wang, H.
- Whitfield, S. B.
- Lindle, Dennis W.
- Wehlitz, R.
- Sellin, I. A.
- Perera, Rupert C.
- Dias, E. W. B.
- Levin, Jon C.
- Chakraborty, H. S.
- Deshmukh, P. C.
- Manson, S. T.
Publication date
November 1997
DOI Publisher
Digital Scholarship@UNLV ISSN
0953-4075 Citation count (estimate)
24Abstract
Angular distributions of valence photoelectrons showing effects due to higher-multipole photon interactions have been measured for the first time. Neon 2s and 2p photoemission exhibits effects beyond the dipole approximation throughout the 250 - 1200 eV photon-energy range studied. The results suggest that any photoemission experiment, on any sample, can be affected at relatively low photon energies, pointing to a general need for caution in interpreting angle-resolved-photoemission measurements
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