The properties of states in ${}^{207}\mathrm{Pb}$ populated with the ${(n,n}^{\prime }\gamma )$ reaction have been studied. γ-ray excitation functions, angular distributions, and coincidences have been measured, and the lifetimes of many excited states were determined with the Doppler-shift attenuation method. A sextuplet of states near 3.2 MeV is interpreted as resulting from weak-coupling of the $\nu f_{5/2}^{-1}$ first excited state of ${}^{207}\mathrm{Pb}$ with the octupole phonon of the ${}^{208}\mathrm{Pb}$ core. A number of $E1\mathrm{}$ transitions have been identified, and their reduced transition probabilities have been examined. The properties of low-lying levels in ${}^{207}\mathrm{Pb}$ have been studied in the framework of the particle-core coupling model.

• Received 24 February 1999

DOI:https://doi.org/10.1103/PhysRevC.61.034307