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Vibrational Electron Energy Loss Spectroscopy

  • J. C. Bertolini
Part of the Fundamental and Applied Catalysis book series (FACA)

Abstract

Various techniques can be used to measure surface vibrations on solids: infrared emission or absorption (IR), inelastic neutron scattering (INS), inelastic electron tunneling spectroscopy (IETS), Raman spectroscopy, and electron energy loss spectroscopy (EELS). This last technique is the most recent, and still under development with respect to both the technical and the theoretical points of view. We will not describe here details of the basic principles that govern vibrating systems: group theory. The number of vibration modes depends upon the symmetry of the system and the vibration energies depend upon the force constants (derivative of the harmonic potential). The surface vibrations can be artificially divided into two classes depending upon their energy values: those being closely connected to the substrate phonons (i.e., bulk or surface phonons) and the intramolecular vibrations of adsorbed species having higher energies, which can be considered as decoupled from the substrate.

Keywords

Vibration Mode Electron Energy Loss Spectroscopy Vibration Energy Inelastic Neutron Scatter Surface Vibration 
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 1994

Authors and Affiliations

  • J. C. Bertolini
    • 1
  1. 1.Institut de Recherches sur la CatalyseCNRSVilleurbanneFrance

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