Realization of simultaneous channeling and nuclear-hyperfine-interaction experiments

With the use of conversion electrons emitted during the decay of ${}_{}{}^{111}{}_{}{}^{}\mathrm{In}$ atoms diffused into a copper single crystal, it is shown that the electrons are steered by lattice rows and that the impurities are localized at substitutional sites. The damage produced by implantation of the radioactive atoms was investigated in a simultaneously performed channeling and perturbed-$\gamma \gamma$ angular-correlation experiment using ${}_{}{}^{111}{}_{}{}^{}\mathrm{In}$ as probe atom. The formation of defect clusters at the probes' site can be observed by both techniques.