γ-ray spectroscopy of proton neutron-hole nucleus208Bifrom deep inelastic heavy ion reactions
2003
$\ensuremath{\gamma}$ Rays in the $\ensuremath{\pi}{\ensuremath{\nu}}^{\ensuremath{-}1}$ nucleus ${}^{208}\mathrm{Bi}$ have been studied at the Gammasphere using deep-inelastic reactions induced by a $305\ensuremath{-}\mathrm{MeV}{ }^{48}\mathrm{Ca}$ beam on a thick ${}^{208}\mathrm{Pb}$ target. Previously unknown yrast $\ensuremath{\gamma}$-ray cascades above the ${10}^{\ensuremath{-}}$ millisecond isomer in ${}^{208}\mathrm{Bi}$ were identified in cross coincidence with known $\ensuremath{\gamma}$ rays from complementary potassium products. Yrast and near-yrast levels up to 5.6 MeV in ${}^{208}\mathrm{Bi}$ have been located, and they are interpreted in light of earlier charged particle spectroscopy results, and with the help of shell model calculations.
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