The linear polarizations of some $\gamma$ rays resulting from the $\alpha$ bombardment of ${\mathrm{F}}^{19}$ have been measured. From these results, spins and parities of levels in ${\mathrm{Na}}^{22}$ have been assigned or verified as follows: 0.891 MeV (${\mathrm{J}}^{\pi }=4^{+}$), 1.528 MeV ($5^{+}$), 1.937 MeV ($1^{+}$), 2.211 MeV ($1^{-}$).

• Received 4 August 1967

DOI:https://doi.org/10.1103/PhysRev.164.1479