Chemical erosion by deuterium impact on carbon films doped with nanometer-sized carbide crystallites

Balden, M., Adelhelm, C., de Juan Pardo, E.M., & Roth, J. (2007) Chemical erosion by deuterium impact on carbon films doped with nanometer-sized carbide crystallites. Journal of Nuclear Materials, 363-365, pp. 1173-1178.

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The erosion by 30 and 200 eV/D at temperatures between 300 and 1100 K was investigated for magnetron-sputtered films, consisting of carbon and metal (2–7 at.% W, Ti, Zr) present as nanometer-sized carbide crystallites. The total erosion yield was determined from weight-loss measurements and film thickness changes measured by RBS. The chemical erosion yield was obtained from the CD4 signal of mass spectrometry. The total erosion yield of doped films is reduced by a factor of 3–20 compared to pure C films. The CD4 production yield decreases less implying that the distribution of the chemically eroded species was changed by the dopants. Therefore, measuring only CD4 production or its spectroscopic signature could yield to misleading values and interpretations.

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ID Code: 99644
Item Type: Journal Article
Refereed: Yes
Keywords: Amorphous films, Carbon-based materials, Chemical erosion, Erosion and deposition, Hydrocarbons
DOI: 10.1016/j.jnucmat.2007.01.188
ISSN: 00223115
Divisions: Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 04 Oct 2016 03:40
Last Modified: 06 Oct 2016 00:57

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