Proton-hole and core-excited states in the semi-magic nucleus 131In82

J. Taprogge et al. ; 10 pags.; 6 figs.; 2 tabs.The β decay of the N = 83 nucleus Cd has been studied at the RIBF facility at the RIKEN Nishina Center. The main purpose of the study was to identify the position of the 1 p and 0 f proton-hole states and the energies of core-excited configurations in the semi-magic nucleus In. From the radiation emitted following the β decay, a level scheme of In was established and the β feeding to each excited state determined. Similarities between the single-particle transitions observed in the β decays of the N = 83 isotones In and Cd are discussed. Finally the excitation energies of several core-excited configurations in In are compared to QRPA and shell-model calculations. © SIF, Springer-Verlag Berlin Heidelberg 2016We thank the staff of the RIKEN Nishina Center accelerator complex for providing stable beams with high intensities for the experiment. We acknowledge the EUROBALL Owners Committee for the loan of germanium detectors and the PreSpec Collaboration for the readout electronics of the cluster detectors. This work was supported by the Spanish Ministerio de Ciencia e Innovacion under contract FPA2011-29854-C04 and the Spanish Ministerio de Economía y Competitividad under contract FPA2014-57196-C5-4-P, the Generalitat Valenciana (Spain) under grant PROMETEO/2010/101, the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (No. NRF-2014S1A2A2028636), the Priority Centers Research Program in Korea (2009-0093817), OTKA contract number K-100835, JSPS KAKENHI (Grant No. 25247045), the Grant by IN2P3-RFBR under Agreement No. 110291054, the STFC (UK), the European Commission through the Marie Curie Actions call FP7-PEOPLE-2011- IEF under Contract No. 300096, the U.S. Department of Energy, Office of Nuclear Physics, under Contract No. DE-AC02- 06CH11357, the “RIKEN foreign research program” and the German BMBF (No. 05P12RDCIA and 05P12RDNUP) and HIC for FAIR.Peer Reviewe