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Excited states in ${}^{208}$Pb have been studied by measuring $\ensuremath{\gamma}$ rays in time coincidence with reaction charged particles. ${}^{208}$Pb states were produced with both the ${}^{207}$Pb${(d,p)}^{208}$Pb and ${}^{209}$Bi$(t,\ensuremath{\alpha})$${}^{208}$Pb reactions. The energy resolution of the particle spectra of 100 keV allowed a rough determination of level excitation, which then was determined with high resolution from the coincident $\ensuremath{\gamma}$ decay measured in Ge detectors. Many new $\ensuremath{\gamma}$ transitions have been found and previously unresolved multiplets of states resolved. The data give spectroscopic factors for neutron transfer and proton pickup. Spins and parities of levels could be deduced from their $\ensuremath{\gamma}$ decays. A least squares fit of all $\ensuremath{\gamma}$ energies gave very precise (0.1 keV) level energies. All states predicted by the shell model below 4.6 MeV are now found and their spins determined unambiguously.

Discrete transitions between very high spin states in 170W were studied with the 154Gd(20Ne, 4n) reaction. The second band crossing occurs at a rotational frequency of ≈ 0.48 MeV, which is considerably higher than in other nuclei. The data are interpreted within a pairing selfconsistent HFBC model which suggests that the proton h 9 2 2 (ω = 1 2 ) alignment is predominantly responsible for the second band crossing.

Gamma decay of the four previously known 10 + states between 4.8 and 5.9 MeV of excitation in 208 Pb, and isomerism of the lowest 10 + [T 1 2 =500(50) ns ] and 8 + [T 1 2 =3.2(5) ns ] states have been established with α - γ coincidence measurements in 209 Bi(t, αγ ) 208 Pb. Wavefunctions for the 10 + states were deduced in the model space involving 1p-1h excitations only. These show that the π h 9 2 h 11 2 −1 strength is nearly evenly distributed among the 10 + states, in disagreement with results from (e, e′) data.