Method for Determining Spins of Neutron Resonances

The proposed method for measuring the spin of $S$-wave neutron resonances is based on the detailed properties of the low-energy capture $\gamma$-ray spectrum. Measurements on nuclei with resonances of known spin show that this method gives reliable spin assignments. It is also applied to unassigned resonances in ${}_{}{}^{167}{}_{}{}^{}\mathrm{Er}$ and ${}_{}{}^{187,189}{}_{}{}^{}\mathrm{Os}$.