Observation of PrimaryE2Transitions in the ReactionPb207(n, γ)

Abstract

Thirty-six high-energy, primary $E2\mathrm{}$ transitions to the ${}_{}{}^{208}{}_{}{}^{}\mathrm{Pb}$ ground state have been identified and their radiation widths measured in a study of the reaction ${}_{}{}^{207}{}_{}{}^{}\mathrm{Pb}(n, \gamma )$. The measured $E2\mathrm{}$ widths in the excitation energy region between 7.37 and 8.17 MeV are compared with those expected from the rising tails of giant quadrupole resonances located at 8.9 and 10.9 MeV.