Gas-Exposure Enhanced Na* Emission from Na-Rich Surfaces,

Abstract

The optical emission attributed to electronically desorbed excited sodium atoms from NaCl and Na-evaporated surfaces is shown to be enhanced by exposure of the surface to gaseous CO2 and N2. This is the first observation of enhancement of electron-stimulated desorption of substrate atoms caused by the exposure of surfaces to gaseous molecules which do not contain the desorbed atoms. The large amount of excited sodium yield at 60 K provides evidence for non-existence of the secondary-electron excitation of thermally desorbed ground sodium.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1992
Accession Number
ADA302896

Entities

People

  • Alan Barnes
  • Jun Xu
  • Norman Tolk
  • Xinxing Yang

Organizations

  • Vanderbilt University

Tags

Communities of Interest

  • Biomedical
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Atoms
  • Base Pressure
  • Chemical Reactions
  • Contracts
  • Desorption
  • Electronic States
  • Electrons
  • Emission
  • Emission Spectra
  • Excitation
  • Free Electron Lasers
  • Free Electrons
  • Ground State
  • High Temperature
  • Impurities
  • Low Temperature
  • Metals

Fields of Study

  • Physics

Readers

  • Electrochemical Engineering/ Fuel Cell Technologies
  • Materials Science and Engineering.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene