Abstract
New neutron rich isotopes and were produced in bombardments of a target with 117-MeV and 123-MeV ions at the Lawrence Berkeley National Laboratory 88-Inch Cyclotron. Identification was made by observation of correlated -particle decays between the Bh isotopes and their Db and Lr daughters using a rotating wheel system. was produced with a cross section of pb and decays with a s half life by emission of particles with an average energy of MeV. One atom of was observed, decaying within 1 s by emission of a 9.29-MeV particle.
- Received 23 February 2000
DOI:https://doi.org/10.1103/PhysRevLett.85.2697
©2000 American Physical Society