Experimental study of β and β-n decay of the neutron-rich N=54 isotone As 87

A. Korgul, K. P. Rykaczewski, R. Grzywacz, C. R. Bingham, N. T. Brewer, A. A. Ciemny, C. J. Gross, C. Jost, M. Karny, M. Madurga, C. Mazzocchi, A. J. Mendez, K. Miernik, D. Miller, S. Padgett, S. V. Paulauskas, D. W. Stracener, M. Wolińska-Cichocka

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Abstract

The β-decay properties of neutron-rich As87 produced in the proton-induced fission of U238 were studied at the Holifield Radioactive Ion Beam Facility at Oak Ridge National Laboratory. The low-energy excited states in N=53 Se87 and N=52 Se86 were identified through β-γ and β-delayed neutron-γ decay of As87, respectively. The experimental systematics of low-energy levels of N=53 isotones, Z=34 Se,87 and Z=32 Ge85, and along with an analysis of shell-model calculations, allow us to discuss the main features of excited states expected for the next N=53 isotone, Zn83.

Original languageEnglish
Article number054318
JournalPhysical Review C - Nuclear Physics
Volume92
Issue number5
DOIs
StatePublished - Nov 23 2015

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