The decay asymmetries resulting from the residual polarization of negative muons were measured in the components of the ground-state hyperfine doublet of ${}_{}{}^6{}_{}{}^{}\mathrm{Li}$, ${}_{}{}^7{}_{}{}^{}\mathrm{Li}$, ${}_{}{}^9{}_{}{}^{}\mathrm{Be}$, ${}_{}{}^{10}{}_{}{}^{}\mathrm{B}$, and ${}_{}{}^{11}{}_{}{}^{}\mathrm{B}$ muonic atoms. The results show a characteristic consequence of the muonmucleus magnetic dipole coupling during the muonic cascade.

• Received 31 July 1970

DOI:https://doi.org/10.1103/PhysRevLett.25.1348