Аңдатпа
The proton and deuteron pickup reactions $${}^{2}\textrm{H}({}^{10}\textrm{Be},{}^{3}\textrm{He}){}^{9}\textrm{Li}$$ and $${}^{2}\textrm{H}({}^{10}\textrm{Be},{}^{4}\textrm{He}){}^{8}\textrm{Li}$$ were studied with the $${}^{10}\textrm{Be}$$ radioactive beam produced by the new fragment separator ACCULINNA-2 at FLNR, JINR. These measurements were initially motivated as the test reactions intended for the elucidation of results obtained in the study of the extremely neutron-rich $${}^{7}$$ H and $${}^{6}$$ H systems created in the $${}^{2}\textrm{H}({}^{8}\textrm{He},{}^{3}\textrm{He}){}^{7}\textrm{H}$$ and $${}^{2}\textrm{H}({}^{8}\textrm{He},{}^{4}\textrm{He}){}^{6}\textrm{H}$$ reactions with the use of the same setup. In the $${}^{2}\textrm{H}({}^{10}\textrm{Be},{}^{3}\textrm{He}){}^{9}\textrm{Li}$$ reaction the $${}^{9}$$ Li ground-state ( $$3/2^{-}$$ ) and its first excited state (2.69 MeV, $$1/2^{-}$$ ) were identified in the low-energy region of its excitation spectrum. The differential cross sections for the $${}^{9}\textrm{Li}_{\text{g.s.}}$$ population were extracted at the forward center-of-mass angles ( $$3^{\circ}{-}13^{\circ}$$ ) and compared with the FRESCO calculations. Spectroscopic factor of $${\sim}1.7$$ , derived by a model suggesting the $${}^{10}\textrm{Be}=p+{}^{9}\textrm{Li}_{\text{g.s.}}$$ clustering was found in accord with the experimental data. The energy spectrum of $${}^{8}$$ Li populated in the $${}^{2}\textrm{H}({}^{10}\textrm{Be},{}^{4}\textrm{He}){}^{8}\textrm{Li}$$ reaction shows the strong peak which corresponds to the excitation of the second excited state of $${}^{8}$$ Li (2.25 MeV, $$3^{+}$$ ). The fact that the ground and the first excited states of $${}^{8}$$ Li were not observed in this reaction is consistent with the shell-model structure of the nuclei involved.