Single-neutron knockout from ${}^{34,35}\mathrm{Si}$ and ${}^{37}\mathrm{S}$

Results of single-neutron knockout experiments from ${}^{34,35}\mathrm{Si}$ at $73A\hspace{0.5em}\mathrm{MeV}$ and from ${}^{37}\mathrm{S}$ at $69A\hspace{0.5em}\mathrm{MeV}$ on a Be target are reported. The final states in the reaction residues have been identified by measuring $\gamma$ rays in coincidence with the $\left(A-1\right)$ fragments. The results are compared with predictions based on the many-body shell model combined with eikonal and transfer-to-the-continuum reaction models. For the ${}^9\mathrm{Be}{(}^{34}\mathrm{Si}{,}^{33}\mathrm{Si}+\gamma )X$ reaction, the measured parallel-momentum distributions of the reaction residues demonstrate the orbital-angular-momentum assignments l=2, 0, 2 to levels at 0, 1.010, and 4.32 MeV (adopted values). The measured absolute spectroscopic factors exhaust a large fraction of the sum rules for a full $\mathrm{}(N=20\mathrm{})\mathrm{}\hspace{0.5em}\mathrm{sd}$ shell. We also give results for the absolute and relative positions of the parallel-momentum distributions and present experimental and theoretical results for the complex spectra of the ${}^9\mathrm{Be}{(}^{35}\mathrm{Si}{,}^{34}\mathrm{Si}+\gamma )X$ reaction. The measured inclusive cross section of 106(19) mb agrees well with the theoretical value of 98 mb, but more detailed conclusions are not possible. For the inclusive reaction ${}^9\mathrm{Be}{(}^{37}\mathrm{S}{,}^{36}\mathrm{S})X$ a cross section of 99(12) mb is found compared to the theoretical prediction of 85 mb where only final states with spectroscopic factors greater than 0.03 have been included.