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Location of interstitial deuterium in TaD0.067 by channelling

Publisher
Elsevier Science
Year
1978
Tongue
English
Weight
160 KB
Volume
28
Category
Article
ISSN
0042-207X

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✦ Synopsis

investigation of the surface diffusion of oxygen on W(110). The vibrating electrode consists of a wire of 6 pm diameter which can be moved across the surface at a distance of 15 pm. The local work function profile is converted to the corresponding concentration profile by a calibration curve obtained by Auger spectroscopy. The evaluation achieved by the Boltzmann-Matano analysis yields a concentration dependent diffusion coefficient with an activation energy of 27 f 2 kcal. The concentration dependence can qualitatively be explained by the known adsorption properties of this adsorbate-substrate system.

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