Abstract
The energy spectra of O, Al and Fe ion beams, accelerated in the Harwell tandem generator, have been studied with terminal voltages from 3 to 5 MV and carbon foil stripping. The measurements were made on the unanalysed, multiply-charged, and therefore multi-energy beams, by scattering from a thin Au foil into a Si detector; the corresponding charge-state distributions and average charges q were thus deduced. The results obtained for O ions are consistent with previous measurements of q for O beams emerging from a carbon foil at an energy equivalent to the terminal voltage; the results for Al and Fe ions may be slightly greater than the q values immediately after the stripper foil. The accelerated ion beams were found to be accompanied by a contaminant beam consisting of a few percent of singly charged O, N, C, H and some molecular ions, with energies up to that corresponding to the terminal voltage; these are attributed to ionization of the residual gas in the high energy accelerator tube.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
