Level Structure of ${\mathrm{Bi}}^{208}$ as Observed at High Resolution with the ${\mathrm{Bi}}^{209}(d, t){\mathrm{Bi}}^{208}$ Reaction

The ${\mathrm{Bi}}^{209}(d, t){\mathrm{Bi}}^{208}$ reaction has been studied at a bombarding energy of 12 MeV with a high-resolution magnetic spectrograph. A ground-state $Q$ value of -1.201±0.005 MeV was measured. Excited states were observed at 0.063, 0.513, 0.605, 0.634, 0.651, 0.890, 0.929, 0.963, 1.074, 1.098, 2.349, 2.394, and 2.417 MeV. The angular-distribution data taken separate the $h_{\frac{9}{2}}{p_{\frac{3}{2}}}^{-1\mathrm{}}$ states from the $h_{\frac{9}{2}}{f_{\frac{5}{2}}}^{-1\mathrm{}}$ states. Spin assignments based on the observed cross sections of the levels are given. In particular, the ground state and first excited state are assigned $J=5\mathrm{}$ and J=4, respectively. The resulting interpretation is in good agreement with the ${\mathrm{Bi}}^{208}$ calculations by Kim and Rasmussen.