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Displaying 26 - 47 of 47

Vibrational Excitation in Photoemission Spectroscopy of Condensed Molecules

December 15, 1976
Author(s)
John William Gadzuk
Photoelectron spectra of gas-phase molecules display sharp vibrational structure. The envelope of the spectrum is determined by the Franck-Condon factor. On the other hand, photoelectron spectra of the same molecules, adsorbed or condensed onto metal

Angle Resolved Auger Surface Spectroscopy

November 1, 1976
Author(s)
John William Gadzuk
The angular distribution of electrons ejected in core-valence-valence Auger transitions of atoms chemisorbed on metal surfaces is considered theoretically. Since the valence electrons participating in the Auger transition are also involved in chemical

Relaxation Energies in Chemisorption Spectroscopy

January 1, 1975
Author(s)
John William Gadzuk
The upward shift in atomic energy levels (or decrease in electron binding energies) which occurs upon sorption of an atom on a metal surface due to polarization of the valence band electrons, is considered. The polarization shift or extra-atomic relaxation

Surface Molecules and Chemisorption, I. Adatom Density of States

May 1, 1974
Author(s)
John William Gadzuk
A useful picture of chemisorption on metal surfaces is one in which a localized molecule is formed between the adatom and its nearest neighbor substrate atoms. The interaction responsible for the molecule formation is treated as the coupling between the

Valence-Band Auger-Electron Spectra for Aluminum

February 15, 1974
Author(s)
John William Gadzuk
Recent measurements of the L 23VV auger spectrum of Al by Powell, have shown that the observed energy distributions do not correspond to the self-convolution of the Al bulk density of states. Attempts to account for this discrepancy in terms of energy

Field Emission Energy Distribution (FEED)

July 1, 1973
Author(s)
John William Gadzuk, E. W. Plummer
The technique of measuring the energy distribution of electron which have been field emitted from a cold cathode is considered. The genral historical and introductory theory is presented. A survey of the experimental techniques and existing energy

Field-Emission Tails and Tunneling Lifetimes

June 1, 1973
Author(s)
John William Gadzuk, A Lucas
Recent observations of high- and low-energy tails in field-emission energy distributions can be interpreted in terms of quasi-stationary-state single-particle tunneling. This imposes a restriction on the observable range of energies in such studies. The