Publication Date

1992

Document Type

Dissertation/Thesis

First Advisor

Hurych, Zdenek D.

Degree Name

M.S. (Master of Science)

Department

Department of Physics

LCSH

Surfaces (Physics)||Silicon--Surfaces||Photons||Glass--Surfaces

Abstract

Photon stimulated desorption (PSD) is a highly successful method for investigating the surface electronic properties of various substances. This work presents a comparative study between PSD from Si(100) and glass using synchrotron radiation. Catalytic oxidation of the Si(100) surface is achieved with sodium coverage. Ion yield for both substrates is studied as a function of alkali metal coverage and oxygen exposure, where the general lineshape of the spectra may vary. Both resonant and nonresonant desorption is found to occur by an Auger-assisted process with the observation of H+ at the Si(L[sub2,3]) and Na(L[sub2,3]) edges. For glass, the desorption spectra are shown to exhibit a series of resonances in the near-threshold region. Heat is shown to greatly influence the spectral lineshape of Si0[sub2] ion yield.

Comments

Includes bibliographical references (pages [19]-20)

Extent

39 pages

Language

eng

Publisher

Northern Illinois University

Rights Statement

In Copyright

Rights Statement 2

NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors.

Media Type

Text

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