Abstract
The first results are reported on $(^{6}\mathrm{He},^{8}\mathrm{Be})$ two-proton pick-up reactions on $^{12}\mathrm{C}$, $^{16}\mathrm{O}$, and $^{19}\mathrm{F}$ nuclei. The measurements were done with an $18\phantom{\rule{0.3em}{0ex}}\mathrm{MeV}$ beam on $^{6}\mathrm{LiF}$, $^{7}\mathrm{LiF}$, $^{6}\mathrm{Li}_{2}\mathrm{C}{\mathrm{O}}_{3}$, and $^{12}\mathrm{C}$ targets. The measured angular distributions for the $^{12}\mathrm{C}(^{6}\mathrm{He},^{8}\mathrm{Be})^{10}\mathrm{Be}$ (g.s.) and $^{12}\mathrm{C}(^{6}\mathrm{He},^{8}\mathrm{Be})^{10}\mathrm{Be}^{*}(3.37\phantom{\rule{0.3em}{0ex}}\mathrm{MeV})$ reactions show a clear signature of a direct process. Although the contributions from the $^{6}\mathrm{Li}(^{6}\mathrm{He},^{8}\mathrm{Be})^{4}\mathrm{H}$ reaction were observed, no clear extraction of the $^{4}\mathrm{H}$ data was possible.
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