Adsorption of H/sub 2/ and D/sub 2/ on Fe(110). 2. Angle resolved thermal-desorption spectroscopy and kinetic mechanism. Interim technical report

Technical Report · Thu Jul 30 04:00:00 EDT 1987

OSTI ID:5941615

Kurz, E A; Hudson, J B

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 was 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. H/sub 2/ and D/sub 2/ 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.

• Research Organization: Rensselaer Polytechnic Inst., Troy, NY (USA). Dept. of Materials Engineering
• OSTI ID: 5941615
• Report Number(s): AD-A-183626/1/XAB; TR-3
• Country of Publication: United States
• Language: English

Related Subjects

656003* -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ACTIVATION ENERGY
ADSORPTION
ATOMS
DESORPTION
DEUTERIUM
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY
HYDROGEN
HYDROGEN ISOTOPES
INTERACTIONS
IRON
ISOTOPES
KINETICS
LIGHT NUCLEI
LOW TEMPERATURE
METALS
NONMETALS
NUCLEI
ODD-ODD NUCLEI
RADIATIONS
SORPTION
SORPTIVE PROPERTIES
SPECTROSCOPY
STABLE ISOTOPES
SURFACE PROPERTIES
SURFACES
THERMAL RADIATION
TRANSITION ELEMENTS