Cu-Be合金の活性化処理と2次電子放射特性

概要

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Activation treatment of commercially avairable Cu-Be(2%)alloy has been investigated. The characteristics of secondary electron emission and the decay of δ due to the electron bombardment have been measured for the samples treated at varions condition. The δmax values of these treated samples mainly distribute mostly between 4 and 6, and the yield of almost these treated samples decreased to about 80% of their values. In our experiment, the best result was obtained under the heat treatment at 800°C for 15 minutes keeping at the oxygen pressure P0=6×10<SUP>-3</SUP> Torr and then for subsequent 10 minutes in high vacuum. Although the δmax -values for these samples are a little low, between 4 and 5, no decay of the yield are observed after 15 hours' electron bombardment at 400 eV. The electron diffraction study shows that the surface products for the most of these samples are only BeO.
日本質量分析学会の論文