The Adsorption of H2 and D2 on Fe(110). 2. Angle Resolved Thermal Desorption Spectroscopy and Kinetic Mechanism.

Abstract

Results of angle resolved thermal desorption spectroscopy (ARTD) measurements for the adsorption of Deuterium and Hydrogen on Iron are presented. A detailed model of the interaction process has been developed using these results in combination with results obtained using thermal energy atom scattering (TEAS), reported in Part I of this work. Angle Resolved Thermal Spectroscopy was used to measure the desorption flux as a function of surface polar angle during temperature programming following adsorption at a low temperature. Second order desorption kinetics, as observed with TEAS in part I, were confirmed. H2 and D2 were found to adsorb directly, dissociatively and with an activation energy of 700 cal/mole. The sticking coefficient was observed to decrease with increasing coverage.

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Document Details

Document Type
Technical Report
Publication Date
Jul 30, 1987
Accession Number
ADA183626

Entities

People

  • E. A. Kurz
  • J. B. Hudson

Organizations

  • Rensselaer Polytechnic Institute

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Chemistry
  • Coefficients
  • Contracts
  • Detectors
  • Energy
  • Engineering
  • Governments
  • Heat Of Activation
  • Mass Spectrometers
  • Materials
  • Materials Engineering
  • Materials Science
  • Measurement
  • Military Research
  • Scattering
  • Spatial Distribution
  • Spectroscopy

Fields of Study

  • Physics

Readers

  • Electrochemical Engineering/ Fuel Cell Technologies
  • Molecular Photonics/Laser Physics