Nano-scale structural features of stratified hydrocarbon films formed at interaction of plasma with surface in T-10 tokamak

作者：Kolbasov B N^*; Stankevich V G; Svechnikov N Yu; Neverov V S; Kukushkin A B; Zubavichus Y V; Veligzhanin A A; Sukhanov L P; Menshikov K A; Lebedev A M; Rajarathnam D; Khimchenko L N

来源：Journal of Nuclear Materials, 2011, 415(1): S266-S269.

DOI：10.1016/j.jnucmat.2011.01.005

Hydrocarbon films and flakes (i.e. free standing films) with high atomic deuterium to carbon ratio formed at deuterium plasma discharges in T-10 tokamak are non-crystalline. They contain structure elements of cluster/nanopore type with typical sizes of about 1 nm and interplane distances between X-ray scattering structures 010.7, 0.24 and 0.12 nm. Structural sp(2)- carbon states were found mainly on the wall side of flakes, and sp(3)-hybridized carbon states on their plasma side. In situ monitoring of films growth and hydrogen isotope accumulation in them by means of Fourier-transform infrared (FT-IR) spectroscopy is proposed. The computational modeling of X-ray scattering by random ensembles of carbon nanostructures of various types suggests that a strong peak of X-ray diffraction (XRD) intensity may be caused by the toroids (toroidal carbon nanotubes) with torus radius of about 1 nm.

• 出版日期2011-8-1