Recent updates on the structure of ⁷⁷Ga from high-resolution β decay study of neutron-rich ⁷⁷Zn

Study on the β decay of ⁷⁷Zn into ⁷⁷Ga is presented with updates on the decay scheme and structure of ⁷⁷Ga. The present study utilized a more efficient detector setup along with high purity of the ⁷⁷Cu beam in comparison to previous studies. The purity of beam used prevented any member of the decay chain from being dominant and allowed for comparisons of branching rations between the decays. The greater efficiency of the HPGe clover detectors array means more low energy γ-rays were detected in the decays. The γ-γ and β-γ coincidence data obtained from the experiment were used to develop a revised decay scheme using an objective method. In this method, the standard Gaussian function was used to fit each peak in the γ-γ spectra to determine the peak area on both a peak gate and an adjacent background gate. This enabled us to identify the statistically significant γ-γ coincidence peaks to be used in developing the decay scheme.