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Photoemission from Adsorbates

  • A. M. Bradshaw
Part of the Physics of Solids and Liquids book series (PSLI)

Abstract

Despite the plethora of techniques available to the surface scientist photoemission, or photoelectron spectroscopy, remains the most direct and effective probe of the bound electronic energy levels associated with adorbed species. In this experiment monochromatic radiation in the VUV or soft X-region causes photoexcited electrons (or photoelectrons) to be emitted into the vacuum continuum. Their kinetic energy E f is determined with an electrostatic energy analyzer; their emission direction and spin state may also be important parameters. The energy balance is given by
$$ {E^{N}} + hv = {E^{{N - 1}}}({n_{k}} = 0) + {E_{f}} $$
(15.1.1)
where E N is the total (N-particle) final state energy of the adsorbate-substrate system and E N-1 (n k = 0) is the energy of the (N - 1)-particle system with a hole in the kth level. The electron binding energy (also referred to as the ionization energy or ionization potential) is defined by
$$ {E_{B}} = {E^{{N - 1}}}({n_{k}} = 0) - {E^{N}} = hv - {E_{f}} $$
(15.1.2)

Keywords

Synchrotron Radiation Photoelectron Spectrum Storage Ring Normal Emission Photoemission Spectrum 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • A. M. Bradshaw
    • 1
  1. 1.Fritz-Haber-Institut der Max-Planck-GesellschaftBerlin 33Federal Republic of Germany

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