The $\gamma$ decays of the two lowest $T=\frac{3}{2}$ states in ${\mathrm{Na}}^{21}$ at 8.97 and 9.22 MeV were studied as resonances in the ${\mathrm{Ne}}^{20}(p, \gamma )$ reaction by use of a gas cell and a 30-cc Ge(Li) detector. For the lower resonance, we find three branches: to the ${\frac{3}{2}}^{+}$ ground state (11%), to the ${\frac{5}{2}}^{+}$ first excited state (50%), and to the ${\frac{7}{2}}^{+}$ second excited state (39%). These results imply that $J={\frac{5}{2}}^{+}$ for the $T=\frac{3}{2}$ state. On the simple rotational model, transitions from states of the $K=\frac{1}{2}$ (Nilsson orbit #6) band are possible only to the ground-state $K=\frac{3}{2}$ (#7) band. A $J={\frac{5}{2}}^{+}$, $K=\frac{1}{2}$ assignment for the lowest $T=\frac{3}{2}$ state fits the observed branching ratios. The second resonance decays predominantly to the ground state, and there is at most a 9% branch to the ${\mathrm{½}}^{+}$ state at 2.41 MeV. The second resonance is assigned $J={\frac{1}{2}}^{+}$, $K=\frac{1}{2}$. If the 2.41-MeV state is $K=\frac{1}{2}$ (#9), no transition to it is expected. On both resonances, transitions to higher excited states are obscured by background.

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