Transformations of hydrocarbon radicals moving along a stainless steel tubeстатья
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Дата последнего поиска статьи во внешних источниках: 3 декабря 2017 г.
Аннотация:Transport of exhausted thermonuclear fuel in the ITER divertor and pumping duct was modeled on a specially designed dc glow discharge setup using mass spectrometry, optical and electron microscopy, and electron probe microanalysis. Transport and deposition of hydrocarbon radicals transferred in an H(2)/C (x) H (yx) mixture through a hollow stainless steel anode at a total mixture pressure of 8-212 Pa and a methane content to 15 mol % were considered. It was shown that deposition of radicals and ions (CH(3), C(2)H(3), C(2)H(5)) with kinetic energies of 0.03-3 eV on the anode inner surface at 600 K was suppressed to a large extent. In the temperature range of 600-800 K, deposition of ions and radicals with kinetic energy of similar to 3 eV was partially restored with the formation of soft a-C:H films, while thermalized radicals were not condensed.