Evidence for new isotopes of element 107: 266Bh and 267Bh

  title={Evidence for new isotopes of element 107: 266Bh and 267Bh},
  author={Wilk and Gregorich and Turler and Laue and Eichler and Ninov and Adams and Kirbach and Lane and Lee and Patin and Shaughnessy and Strellis and Nitsche and Hoffman},
  journal={Physical review letters},
  volume={85 13},
New neutron rich isotopes 267107Bh and 266107Bh were produced in bombardments of a 249Bk target with 117-MeV and 123-MeV 22Ne ions at the Lawrence Berkeley National Laboratory 88-Inch Cyclotron. Identification was made by observation of correlated alpha-particle decays between the Bh isotopes and their Db and Lr daughters using a rotating wheel system. 267Bh was produced with a cross section of approximately 70 pb and decays with a 17(+14)(-6) s half life by emission of alpha particles with an… Expand
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