Spin polarization of ${}^{27}\mathrm{Na}$ and ${}^{31}\mathrm{Al}$ in intermediate energy projectile fragmentation of ${}^{36}\mathrm{S}$

Spin-polarized ${}^{27}\mathrm{Na}$ and ${}^{31}\mathrm{Al}$ secondary beams have been produced at GANIL by the fragmentation of a 77.5 MeV/nucleon ${}^{36}{\mathrm{S}}^{16+}$ primary beam onto a ${}^9\mathrm{Be}$ target. The primary beam was deflected at an angle of $-2\left(1\right)\mathrm{}°$ with respect to the entrance of the LISE3 spectrometer, where the target was placed. For linear momenta higher than that of the ${}^{36}\mathrm{S}$ projectiles, a deduced spin polarization $P=-6.2\left(9\right)\%$ and $P=-1.5\left(4\right)\%$ was obtained for ${}^{27}\mathrm{Na}$ and ${}^{31}\mathrm{Al}$ projectile fragments. These results demonstrate for the first time that fragments far from the projectile mass can be substantially polarized.