Study of the Low-Lying Excited States of ${\mathrm{Al}}^{29}$ II: ${\mathrm{Al}}^{27}(t, p\gamma ){\mathrm{Al}}^{29}$ and ${\mathrm{Si}}^{30}(t, \alpha \gamma ){\mathrm{Al}}^{29}$ Angular Correlation Investigation

The low-lying excited states of ${\mathrm{Al}}^{29}$ have been investigated by measuring $\gamma$-ray angular correlations in a collinear geometry. The levels were populated in the ${\mathrm{Al}}^{27}(t, p\gamma ){\mathrm{Al}}^{29}$ and ${\mathrm{Si}}^{30}(t, \alpha \gamma ){\mathrm{Al}}^{29}$ reactions at triton bombarding energies of 2.8 and 2.5 MeV, respectively. The $\gamma$-ray branching ratios for states up to 3.7-MeV excitation energy were obtained. Spin assignments, or limits on the spins, for the first six excited states have been deduced on the basis of these data combined with previous results: [$E_x$, $J^{\pi }$]; 1.40 MeV, ${\mathrm{½}}^{+}$; 1.76 MeV, (½), $\frac{3}{2}$, $\frac{5}{2}$, $\frac{7}{2}$, 2.23 MeV, $\frac{3}{2}$, $\frac{5}{2}$, $\frac{7}{2}$; 2.88 MeV, (${\frac{3}{2}}^{+}$); 3.07 MeV, (${\frac{3}{2}}^{+}$), ${\frac{5}{2}}^{+}$; and 3.19 MeV, ($\frac{3}{2}$), ${\frac{5}{2}}^{\mathrm{}(-)\mathrm{}}$, ${\frac{7}{2}}^{\mathrm{}(-)\mathrm{}}$, ($\frac{9}{2}$).