Beyond the dipole approximation: angular-distribution effects in valence photoemission
Journal of Physics B. Atomic, molecular and optical physics
Institute of Physics Publishing
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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.
Angular distribution (Nuclear physics); Conduction electrons; Dipole moments; Nuclear physics; Photoionization
Atomic, Molecular and Optical Physics | Physical Chemistry
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Fisher, G. R.,
Whitfield, S. B.,
Lindle, D. W.,
Sellin, I. A.,
Perera, R. C.,
Dias, E. W.,
Levin, J. C.,
Chakraborty, H. S.,
Deshmukh, P. C.,
Manson, S. T.
Beyond the dipole approximation: angular-distribution effects in valence photoemission.
Journal of Physics B. Atomic, molecular and optical physics, 30(21),