2020/06/26 by V. Paziy, L. M. Fraile, H. Mach +28
Chemistry · Physics and Astronomy · #Astronomical and nuclear sciences #Atomic and Molecular Physics #Atomic physics #Chemistry #Crystallography #Energy (signal processing) #Excited state #Neutron #Nuclear physics #Nuclear physics research studies #Physics #Valence (chemistry) #nucl-ex #nucl-th
paper · pdf · doi:10.1103/physrevc.102.014329
Submitted to Phys. Rev. C
arxiv created 2020/06/26 · openalex created_date 2020/07/02 · openalex publication_date 2020/07/30 · arxiv updated 2020/08/26 · openalex updated_date 2026/08/05
The \ensuremathβ^\ensuremath- decay of 81Zn to the neutron magic N=50 nucleus 81Ga, with only three valence protons with respect to 78Ni, was investigated. The study was performed at the ISOLDE facility at CERN by means of \ensuremathγ spectroscopy. The 81Zn half-life was determined to be T1/2=290(4) ms while the \ensuremathβ-delayed neutron emission probability was measured as Pn=23(4)%. The analysis of the \ensuremathβ-gated \ensuremathγ-ray singles and \ensuremathγ\text\ensuremath-\ensuremathγ coincidences from the decay of 81Zn provides 47 new levels and 70 new transitions in 81Ga. The \ensuremathβ^\ensuremath-n decay of 81Zn was observed and a new decay scheme into the odd-odd 80Ga nucleus was established. The half-lives of the first and second excited states of 81Ga were measured via the fast-timing method using LaBr3(Ce) detectors. The level scheme and transition rates are compared to large-scale shell-model calculations. The low-lying structure of 81Ga is interpreted in terms of the coupling of the three valence protons outside the doubly magic 78Ni core.