Journal
APPLIED SURFACE SCIENCE
Volume 203, Issue -, Pages 219-222Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0169-4332(02)00629-3
Keywords
polyatomic; ion source; C-60; SSIMS; Ga
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This paper reports initial data from the application of the first dedicated buckminsterfullerene ion beam system developed for routine use on existing ToF-SIMS instruments for static SIMS and chemical imaging. The ion gun provides a selectable beam of C-60(+) and C-60(2+) primary ions, producing a nA beam Of C-60(+) focusable to 1 mum spot size. The results of comparative studies of bulk polymers and thin films using C-60(+) and Ga+ ions are presented. Compared to Ga+, C-60(+) provides a very substantial increase in real ion yields, especially at high mass, with no concomitant increase in the relative yield of low mass fragments. (C) 2002 Elsevier Science B.V. All rights reserved.
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