Abstract
A beam of 7Be 4+ ions having E = 20.7 MeV and intensity 1.5×10 4 s −1 has been produced via the 1H ( 10B, 7Be) 4He reaction. The beam had an energy resolution of 1.0 MeV FWHM, 1 cm spot size, and 3° angular divergence. The effect of a z-moveable secondary stop on beam purity was investigated. A 7Be 4+ ion beam of E = 15.2 MeV, intensity 5×10 3 s −1, and similar energy resolution and emittance characteristics was produced via 12C( 3He, 7Be) 8Be reaction. The maximum feasible 7Be secondary beams from these two reactions are extrapolated to be 5×10 5 s −1, respectively. Elastic scattering data for 7Be from Au and C targets are presented as an example of the use of this radioactive beam in secondary scattering experiments.
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