EDP Sciences, EPJ Web of Conferences, (62), p. 01005, 2013
DOI: 10.1051/epjconf/20136201005
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Excited states in the nuclei As-83 and Se-84,Se-86 have been studied via prompt gamma-ray spectroscopy. The nuclei were produced by the proton-induced fission of a U-238 target, at the accelerator of the University of Jyvaskyla. The JUROGAM-II array was used to detect prompt gamma-rays and a triple-gamma coincidence analysis performed. A comparison of the N = 50 nuclei with shell-model calculations reproduces the low-lying states in As-83 and Se-84 well. The inclusion of particle-hole excitations is necessary to correctly describe the states above similar to 3.5 MeV.