Abstract
In experiments in PISCES-B facility we have observed carbon film formation on beryllium substrates after hydrogen plasma exposure. The sources of the carbon are gaseous impurities in the vacuum system, which also exist in a fusion reactor such as the International thermonuclear experimental reactor (ITER). Thin film formation, resulting from electron-impurity interactions, is studied using a focused electron beam. Initial results show that carbon films are readily formed on beryllium surface in a range of power densities from two kilowatts to over one megawatt per square meter. Electron beam experiments on silicon and tungsten substrates, under the same conditions, do not result in carbon film formation. Microanalyses using scanning electron microscopy, Energy Dispersive X-ray spectroscopy and Raman are presented.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call