Abstract
Irradiation performance of multilayer HBC foils which layers are more than 20 were conducted for the first time, and different types of carbon stripper foils were dosed under a series of irradiation conditions systematically. Eight (8) types of carbon stripper foils were striked by Ar4+ beam under different intensities and fluences. Multilayer foils performed generally better than the monolayer ones. The existence of boron layer helped to increase the resistance of the foils to irradiation damage, elongating their lifetimes.
Highlights
Carbon stripper foils belong to one of the dominant types of stripper foils and have been studied for decades [1][5]
The 100 layers hybrid boron doped carbon (HBC) foil had the best resistance toward irradiation, yet the lifetime of other multilayer HBC foils did not show a regular trend with increasing number of layers as expected
Despite the complication discussed above, it is still possible to tell by comparing the alpha particle test results of 100 layers HBC foil and Diamond like carbon (DLC) foil that multilayer foils maintain better their sizes than DLC foils and are more resistant to irradiation
Summary
Carbon stripper foils belong to one of the dominant types of stripper foils and have been studied for decades [1][5]. The preparation method of the HBC foils has been the subject of many studies, yet the relationship between the characteristics of the layers and the lifetime of the foils has not yet been systematically studied. The irradiation performance of foils with more than 20 layers has not yet been reported. For such foils with thickness around 2μm or less, where each layer is less than 100nm thick, some nanoscale effects [11,12] are expected to take place. 8 types of carbon stripper foils, including foils of 48 layers and 100 layers, were irradiated with a Ar4+ beam of 12 MeV under different intensities and fluences for the first time. The irradiation was performed with the 5U accelerator of University of Notre Dame
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