Fine Structure of the Magnetic Dipole Giant Resonance inPb208

Eighteen $M1\mathrm{}$ transitions to the ${}_{}{}^{208}{}_{}{}^{}\mathrm{Pb}$ ground state have been identified and their radiative widths measured in a study of the reaction ${}_{}{}^{207}{}_{}{}^{}\mathrm{Pb}(n, \gamma )$ combined with the results from recent neutron transmission and elastic scattering measurements. In the excitation region between 7.37 and 8.23 MeV, ∼50% of the expected total $M1\mathrm{}$ strength in ${}_{}{}^{208}{}_{}{}^{}\mathrm{Pb}$ has been located.