Abstract:A technique is described f> the preparation of beryl liu;;i foils by vapor deposition. The hitjh-purity, pinhoie-free foils are v.icimn tight and suitable for nany x-ray analysis applications. The beryllium is evaporated from an electron heai'i healed crucible source onto a heated substrate. Substrate temperatures of 4bO to 700°C are necessary to obtain the desired mechanical properties of thp foi!s. At these temperatures, contamination of the foils by diffusion of the substrate material into the beryllium can… Show more
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