Si28(d, He3)Al27Reaction and the Structure ofSi28andAl27
Abstract
The level structure of $^{27}\mathrm{Al}$ from 0- to 6.5-MeV excitation has been studied with the $^{28}\mathrm{Si}(d, ^{3}\mathrm{He})^{27}\mathrm{Al}$ reaction at ${E}_{d}=34.4$ MeV. Eight experimental angular distributions are presented. Assignments of $l$ values and spectroscopic factors are made with a local, zero-range distorted-wave Born-approximation analysis. The deduced $l$ values are consistent with the known spins of levels of $^{27}\mathrm{Al}$ of excitation energy \ensuremath{\le}3.0 MeV. Levels at 4.05- and 5.15-MeV excitation are assigned $l=1$, and the level at 4.40-MeV excitation is assigned $l=2$. The extracted spectroscopic factors are discussed in terms of some simple models for $^{27}\mathrm{Al}$ and compared with results from new shell-model calculations.
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