Abstract
Decays of neutron-rich nuclei Zn82,83 and Ga82,83 produced in proton-induced fission of U238 were studied at the Holifield Radioactive Ion Beam Facility using on-line mass separation and β-γ spectroscopy techniques. New γ-ray transitions were identified and level schemes, which include states at high excitation energies in the range between 3-7 MeV were constructed. These high-energy levels were identified to be populated through allowed Gamow-Teller β transitions, and their structure was interpreted with new shell-model calculations. A β-delayed neutron branching ratio of 69±7% was deduced for Zn82 and revised β-decay half-life values of Zn82 [155(17)(20) ms] and Zn83 [122(28) ms] were determined.
| Original language | English |
|---|---|
| Article number | 044325 |
| Journal | Physical Review C |
| Volume | 93 |
| Issue number | 4 |
| DOIs | |
| State | Published - Apr 22 2016 |
Funding
This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics and this research used resources of the Holifield Radioactive Ion Beam Facility of Oak Ridge National Laboratory, which was a DOE Office of Science User Facility. This is supported in part by US DOE grants DE-AC05-00OR22725 (ORNL), DE-FG02-96ER40983 (UTK), DE-AC05-06OR23100 (ORAU), and DE-FG05-88ER40407 (Vanderbilt); in part by the National Nuclear Security Administration Grant No. DEFC03-03NA00143 and under the Stewardship Science Academic Alliance program through DOE Cooperative Agreement No. DE-FG52-08NA28552 (UTK); in part by the National Science Centre of the Polish Ministry of Science and Higher Education, Grant No. 2011/01/B/ST2/02476. This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy.