Potential Sputtering of Highly Charged Ions on Copper and Tungsten Surfaces
首发时间:2010-12-10
Abstract:The sputtering yields for copper (Cu) and tungsten (W) targets bombarded by Arq+ (1≤q≤16) and Pbq+ (4≤q≤36) ions were measured. The threshold effect was found for the potential sputtering on metals in this work. The sputtering yields remain constant when q<24, however, they grow dramatically with the charge state q when q≥24. For comparison, the sputtering yields on insulator (SiO2) and semiconductor (Si) were also studied. It increases almost linearly with q in Pbq+ impact case. It is considered that the potential sputtering is strongly dependent on the target material properties, especially the conductivity.
keywords: Surface Modification Potential Sputtering Threshold effect Conductivity
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No.4395166556144129****
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高电荷态离子在Cu和W表面的势能溅射
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