Reduction of contaminants originating from primary beam by improving the beam stoppers in GARIS-II
arXiv:2007.02688 · doi:10.1016/j.nima.2020.164996
Abstract
Two independent beam stoppers have been developed for improving the beam separation of the gas-filled recoil ion separator GARIS-II. Performance evaluation of these supplemental beam stoppers was performed by using the 208Pb (18O,3n)223Th reaction. A160-fold enhancement of the signal-to-noise ratio at the GARIS-II focal plane was observed.
4 pages, 4 figures