Photoelectron Spectroscopy and the Dipole Approximation
Synchrotron Radiation News
Taylor & Francis
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As synchrotron radiation users around the world know, photoelectron spectroscopy using either ultraviolet (UV) or X-ray photons is a common technique for studying materials. Photoelectron spectroscopy is a powerful technique because it can directly probe, via the measurement of photoelectron kinetic energies, orbital and band structure in valence and core levels in a wide variety of samples: atoms, molecules, clusters, solids, surfaces and adsorbates. The technique becomes even more powerful when it is performed in an angle-resolved mode, where photoelectrons are distinguished not only by their kinetic energy, but by their direction of emission as well. Determining the probability of electron ejection as a function of angle is an excellent probe of the different quantum-mechanical channels available to any photoemission process, because it is sensitive to phase differences among these channels. As a result, angle-resolved photoemission has been used successfully for many years to provide stringent tests of our understanding of basic physical processes underlying gas-phase and solid-state interactions with radiation, and also as a tool to probe physical and chemical structure in solids and surfaces.
Photoelectron spectroscopy; Photoemission
Atomic, Molecular and Optical Physics | Physics
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Renaud Guillemin, Oliver Hemmers, Dennis W. Lindle, Steven T. Manson, (2006) Experimental investigation of nondipole effects in photoemission at the advanced light source. Radiation Physics and Chemistry 75:12, pages 2258-2274.
Hansen, D. L.,
Whitfield, S. B.,
Lindle, D. W.,
Levin, J. C.,
Sellin, I. A.,
Perera, R. C.
Photoelectron Spectroscopy and the Dipole Approximation.
Synchrotron Radiation News, 9(6),
Available at: https://digitalscholarship.unlv.edu/hrc_xray_atomic_molecular/1