Single-Hole Structure ofPb207

The ${\mathrm{Pb}}^{208}\mathrm{}(p,d)\mathrm{}{\mathrm{Pb}}^{207}$ reaction has been used with 20.00- and 22.00-MeV proton beams from the Yale MP tandem accelerator to study the low-lying neutron-hole levels of ${\mathrm{Pb}}^{207}$. The finite-range, nonlocal distorted-wave Born-approximation (DWBA) analyses of the experimental ($p,d$) angular distributions indicate that the ${\frac{1}{2}}^{-}\left(3\mathrm{}p_{\frac{1}{2}}^{}{}_{}{}^{-1\mathrm{}}\right)$ ground state, the ${\frac{5}{2}}^{-}\left(2\mathrm{}f_{\frac{5}{2}}^{}{}_{}{}^{-1\mathrm{}}\right)$ 570-keV level, the ${\frac{3}{2}}^{-}\left(3\mathrm{}p_{\frac{3}{2}}^{}{}_{}{}^{-1\mathrm{}}\right)$ 894-keV level, and the ${\frac{13}{2}}^{+}\left(\mathrm{li}_{\frac{13}{2}}^{}{}_{}{}^{-1\mathrm{}}\right)$ 1634-keV level are almost pure single-neutron-hole levels in the ${\mathrm{Pb}}^{208}$ core. The $2f_{\frac{7}{2}}$ neutron-hole strength, and particularly the $1h\frac{9}{2}$ neutron-hole strength, may be somewhat fragmented, although the ${\frac{7}{2}}^{-}\left(2\mathrm{}f_{\frac{7}{2}}^{}{}_{}{}^{-1\mathrm{}}\right)$ 2334-keV level and the ${\frac{9}{2}}^{-}$, ($1h_{\frac{9}{2}}^{}{}_{}{}^{-1\mathrm{}}$) 3430-keV level represent large fractions of their respective sum-rule neutron-hole strength. No evidence was found for $j$ dependence in the ${\mathrm{Pb}}^{208} \mathrm{}(p,d)\mathrm{}$ angular distributions at ${\mathrm{E}}_p=20.00\mathrm{} \mathrm{and} 22.00$ MeV.