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International Hydrogen Conference (IHC 2012): Hydrogen-Materials Interactions

Editor
B. P. Somerday
B. P. Somerday
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P. Sofronis
P. Sofronis
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ISBN:
9780791860298
No. of Pages:
844
Publisher:
ASME Press
Publication date:
2014

Adsorption of hydrogen is difficult to observe using conventional surface science techniques. Two exceptions are low energy ion scattering (LEIS) and direct recoil spectroscopy (DRS), which offer direct sensitivity to adsorbed hydrogen species and provide atomic-scale insight into their behavior. In this work, we apply these techniques to the Al(111)+H and Al(332)+H systems to contrast the adsorbate behavior on a flat surface versus one containing a high density of steps. At room temperature, the adsorbed H layer on the (111) surface is highly disordered, whereas the H signals emerging from the (332) surface contain structure coinciding with open surface channels....

Introduction
Experimental Approach
Hydrogen Adsorption at Room Temperature
Structural Analysis of the Substrate
Analysis of the Hydrogen Recoil Signals
Concluding Remarks and Outlook
Acknowledgements
References
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