A new model-independent method for determining the parity of a state as either $\pi ={\mathrm{}(-)\mathrm{}}^J$ or $\pi ={\mathrm{}(-)\mathrm{}}^{J+1\mathrm{}}$ in odd-odd nuclei is described. The technique requires a polarized deuteron beam to initiate a ($d, \alpha$) reaction on an even-even target with detection of the reaction products near 0° or 180°. The method is demonstrated using the reaction ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}(d, \alpha ){}_{}{}^{10}{}_{}{}^{}\mathrm{B}$.

• Received 29 May 1975

DOI:https://doi.org/10.1103/PhysRevLett.35.423