Abstract
The β-decay properties of the very neutron-rich Ge84 nucleus were studied at the Holifield Radioactive Ion Beam Facility at Oak Ridge National Laboratory. Several new γ-transitions and levels were added to its decay scheme and the order of the two lowest-lying levels in the daughter As84 was corrected. For the first time γ radiation following β-delayed neutron emission was observed. The shell-model calculations and apparent β transition intensities were used to guide the spin assignment to the As84 levels, in particular for the low-energy part of the level scheme. The new spin-parity (2-) proposed for the ground state of As84 is supported also by the systematics of N=51 isotones.
| Original language | English |
|---|---|
| Article number | 064324 |
| Journal | Physical Review C |
| Volume | 93 |
| Issue number | 6 |
| DOIs | |
| State | Published - Jun 28 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 research is sponsored by the Office of Nuclear Physics, US Department of Energy, and supported under U.S. DOE Grants No. DE-AC05-00OR22725, No. DE-FG02-96ER41006, No. DE-FG02-96ER40983, No. DE-AC05-06OR23100, No. DE-FG02-96ER40978, and No. DE-FG05-88ER40407 and National Nuclear Security Administration Grant No. DEFC03-03NA00143. K.M.'s research was performed with support from the Eugene P. Wigner Foundation. The Oak Ridge National Laboratory is managed by UT-Battelle, LLC, for the US Department of Energy under Contract No. DE-AC05-00OR22725.