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Physics

Condensed matter

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Published Date
Displaying 1201 - 1225 of 1275

Auger Electron Spectroscopy

February 1, 1978
Author(s)
Cedric J. Powell
A convenient measure of surface sensitivity in Auger-electron spectroscopy (AES) and x-ray photoelectron spectroscopy (XPS) is the mean escape depth (MED). If the effects of elastic-electron scattering are neglected, the MED is equal to the electron

High Resolution Photoemission Study of Condensed Layers of Nitrogen and Carbon Monoxide

February 1, 1978
Author(s)
P R. Norton, R L. Tapping, H P. Broida, John William Gadzuk, B Waclawski
Values are reported for the absolute yields of KVV Auger electrons from beryllium and L 23VV Auger electrons from aluminum excited by 60- to 220-keV proton bombardment. The measurements were made using semi-infinite evaporated samples, and the results were

Quantitative Surface Analysis by X-Ray Photoelectron Spectroscopy

January 1, 1978
Author(s)
Cedric Powell
Measurements have been made of the relative intensities of the principal features in X-ray photoelectron spectra of indium, lead, and aluminum oxide and compared with those expected from a simple model for the photoemission process. Systematic effects in

Surface Characterization: Present Status and the Need for Standards

January 1, 1978
Author(s)
Cedric Powell
A summary is given of the present status and use of surface-characterization measurements in the United States. Attention is primarily devoted to those properties needed to characterize a solid surface, specifically the determination of surface composition

Angle-resolved photoemission from crystal-field-split adatom levels

April 15, 1977
Author(s)
J F. Herbst
We investigate the angular distribution of photoelectrons emitted from atoms physisorbed on the surface of a metal. The crystalline electric field of the surface is represented by a small number of point charges in the vicinity of the adatom, and the

Secondary-Electron Energy Distribution in High-Energy Photoemission

January 1, 1977
Author(s)
David R. Penn
We have calculated the energy distribution of secondary electrons observed in core-level XPS or core-level synchrotron photoemission experiments on Al. The secondary electrons are produced when the photoexcited primary electrons scatter inelastically from

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
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