Projects per year
nucleus through g-ray spectroscopy at the Isotope Separator On-Line facility of CERN. Previous studies identified two β-decaying states in 34Al having spin-parity assignments Jπ=4−dominated by the normal configurationπ
(d5/2)−1⊗ν(f7/2) and Jπ=1+ by the intruder configuration π(d5/2)−1⊗ν(d3/2)−1(f7/2)2 . Their unknown ordering and relative energy have been the subject of debate for the placement of 34Al inside or outside the N=20 “island of inversion.” We report here that the 1+ intruder lies only 46.6 keV above the 4− ground state. In addition, a new half-life of T1/2=44.9(4)ms, that is twice as long as the previously measured 20(10) ms, has been determined for 34Mg. Large-scale shell-model calculations with the recently developed sdpf-u-mix interaction are compared with the new data and used to interpret the mechanisms at play at the very border of the N=20 island of inversion.
|Number of pages||1|
|Journal||Physical Review C|
|Publication status||Published - 9 Feb 2017|
Bibliographical note© 2017, The Authors.
- 1 Finished
Nuclear Physics Consolidated Grant
Wadsworth, R., Wadsworth, R., Andreyev, A., Andreyev, A., Diget, C. A., Diget, C. A., Fulton, B. R., Fulton, B. R., Jenkins, D., Jenkins, D., Laird, A. M. & Laird, A. M.
SCIENCE & TECHNOLOGY FACILITIES COUNCIL, SCIENCE AND TECHNOLOGY FACILITIES COUNCIL (STFC)
1/08/14 → 30/09/18
Project: Research project (funded) › Research