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Beyond the dipole approximation: angular-distribution effects in valence photoemission

Hemmers, O (author)
Mittuniversitetet
Fisher, P (author)
Glans, Peter (author)
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Hansen, D.L. (author)
Wang, H (author)
Whitfield, S.B. (author)
Wehlitz, R (author)
Levin, J.C (author)
Sellin, I.A. (author)
Perera, R.C.C. (author)
Dias, E.W.B. (author)
Chakraborty, H.S. (author)
Deshmukh, P.C. (author)
Manson, S.T. (author)
Lindle, D.W. (author)
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 (creator_code:org_t)
1997
1997
English.
In: Journal of Physics B: Atomic, Molecular and Optical Physics. - 0953-4075. ; 30:21, s. L727-L733
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Angular distributions of valence photoelectrons showing effects due to highermultipole photon interactions have been measured for the first time. Neon 2s and 2p photoemission exhibits effects beyond the dipole approximation throughout the 250 to 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.

Keyword

RANDOM-PHASE APPROXIMATION
DISTRIBUTION PARAMETERS
MULTIPOLE CORRECTIONS
LOW ENERGIES
PHOTOELECTRONS
PHOTOIONIZATION
RETARDATION
NATURAL SCIENCES
NATURVETENSKAP

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