Abstract
Angular distributions of the $^{8}\mathrm{Be}$ ions from ($^{9}\mathrm{Be}$, $^{8}\mathrm{Be}$) reactions on the target nuclei $^{28}\mathrm{Si}$ and $^{40}\mathrm{Ca}$ have been measured at an energy of 20 MeV (lab). The products of the spectroscopic factors of $^{9}\mathrm{Be}$ and several states of the residual nuclei $^{29}\mathrm{Si}$ and $^{41}\mathrm{Ca}$ were extracterd from a distorted-wave-Born-approximation analysis. Using the spectroscopic factors of $^{29}\mathrm{Si}$ and $^{41}\mathrm{Ca}$ levels, known from ($d,p$) reactions, a spectroscopic factor of 0.42 \ifmmode\pm\else\textpm\fi{} 0.04 for $^{9}\mathrm{Be}$ was found.NUCLEAR REACTIONS $^{28}\mathrm{Si}$($^{9}\mathrm{Be}$, $^{8}\mathrm{Be}$) and $^{40}\mathrm{Ca}$($^{9}\mathrm{Be}$, $^{8}\mathrm{Be}$), ${E}_{\mathrm{lab}}=20$ MeV; measured $\ensuremath{\sigma}(\ensuremath{\theta})$ for stripping to levels of $^{29}\mathrm{Si}$ and $^{41}\mathrm{Ca}$, finite-range DWBA analysis; deduced spectroscopic factor of $^{9}\mathrm{Be}$.
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