Effects of temperature and surface contamination on D retention in ultrathin Li films on TZM [electronic resource].
- Washington, D.C. : United States. Dept. of Energy. Office of Science, 2014.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
- Physical Description:
- pages 1,177-1,180 : digital, PDF file
- Additional Creators:
- Princeton University
United States. Department of Energy. Office of Science
United States. Department of Energy. Office of Scientific and Technical Information
- Here in this work, we investigate deuterium retention at the Mo-Li interface by studying thin Li films three monolayers thick on a TZM Mo alloy. Li films at temperatures between 315 and 460 K were exposed to a deuterium ion beam and D retention was measured using temperature programmed desorption. In the absence of oxygen, D is retained as LiD, and the relative amount of retained D decreases with increasing substrate temperature. In three-monolayer thick lithium oxide films, the amount of D retained was 2.5 times higher than the amount retained as LiD in the metallic Li film. However, oxygen reduces the thermal stability of D in the film, causing D<sub>2</sub>O and D<sub>2</sub> to be released from the surface at temperatures 150-200 K below the LiD decomposition temperature. These results highlight the importance of maintaining a metallic Li layer for high D retention in Li films on TZM at elevated temperatures.
- Published through SciTech Connect.
Journal of Nuclear Materials 463 C ISSN 0022-3115 AM
A. M. Capece; J. P. Roszell; C. H. Skinner; B. E. Koel.
- Funding Information:
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