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Persistent URL http://purl.org/net/epubs/work/48717
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Record Id 48717
Title Heavy-ion-induced electron desorption of gas from metals
Abstract During heavy-ion operation in several particle accelerators worldwide, dynamic pressure rises of orders of magnitude were triggered by lost beam ions that bombarded the vacuum chamber walls. This ioninduced molecular desorption, observed at CERN, GSI, and BNL, can seriously limit the ion beam lifetime and intensity of the accelerator. From dedicated test stand experiments we have discovered that heavy-ion-induced gas desorption scales with the electronic energy loss (dEe=dx) of the ions slowing down in matter; but it varies only little with the ion impact angle, unlike electronic sputtering.
Organisation CCLRC , ASTeC , ASTeC-VS
Keywords UHV , Physics , heavy ion induced desorption
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Language English (EN)
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Journal Article Phys Rev Lett 98 (2007): 064801. doi:10.1103/PhysRevLett.98.064801 2007