β and βn decay of the neutron-rich Ge84 nucleus

A. Korgul, K. P. Rykaczewski, R. K. Grzywacz, C. R. Bingham, N. T. Brewer, C. J. Gross, A. A. Ciemny, C. Jost, M. Karny, M. Madurga, C. Mazzocchi, A. J. Mendez, II, K. Miernik, D. Miller, S. Padgett, S. V. Paulauskas, M. Piersa, D. W. Stracener, M. Stryjczyk, M. Wolińska-Cichocka, and E. F. Zganjar
Phys. Rev. C 93, 064324 – Published 28 June 2016

Abstract

The β-decay properties of the very neutron-rich Ge84 nucleus were studied at the Holifield Radioactive Ion Beam Facility at Oak Ridge National Laboratory. Several new γ-transitions and levels were added to its decay scheme and the order of the two lowest-lying levels in the daughter As84 was corrected. For the first time γ radiation following β-delayed neutron emission was observed. The shell-model calculations and apparent β transition intensities were used to guide the spin assignment to the As84 levels, in particular for the low-energy part of the level scheme. The new spin-parity (2) proposed for the ground state of As84 is supported also by the systematics of N=51 isotones.

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  • Received 7 April 2016

DOI:https://doi.org/10.1103/PhysRevC.93.064324

©2016 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

A. Korgul1, K. P. Rykaczewski2, R. K. Grzywacz3,2, C. R. Bingham3,2, N. T. Brewer2,4,5, C. J. Gross2, A. A. Ciemny1, C. Jost3, M. Karny1,6, M. Madurga3, C. Mazzocchi1, A. J. Mendez, II2, K. Miernik1,2, D. Miller3, S. Padgett3, S. V. Paulauskas3, M. Piersa1, D. W. Stracener2, M. Stryjczyk1, M. Wolińska-Cichocka2,5,7, and E. F. Zganjar8

  • 1Faculty of Physics, University of Warsaw, PL 02-093 Warsaw, Poland
  • 2Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
  • 3Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
  • 4Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235, USA
  • 5Joint Institute for Nuclear Physics and Applications, Tennessee 37831, USA
  • 6Oak Ridge Associated Universities, Oak Ridge, Tennessee 37831, USA
  • 7Heavy Ion Laboratory, University of Warsaw, PL 02-093 Warsaw, Poland
  • 8Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA

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Issue

Vol. 93, Iss. 6 — June 2016

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