Low spin structure of Se86: Confirmation of γ collectivity at N=52

T. Materna, W. Urban, K. Sieja, U. Köster, H. Faust, M. Czerwiński, T. Rząca-Urban, C. Bernards, C. Fransen, J. Jolie, J.-M. Regis, T. Thomas, and N. Warr
Phys. Rev. C 92, 034305 – Published 8 September 2015

Abstract

The Se86 nucleus has been investigated by γ-ray spectroscopy using an array of Ge detectors placed at the exit of the fission-fragment mass separator Lohengrin of the Institut Laue-Langevin. New transitions have been identified by studying the β decay of As86. An excitation scheme is proposed and includes a 22+ level at 1399 keV and a possible 3+ level that are well reproduced by shell model calculations with the most recent parametrization. The properties of the excitations indicate a possible onset of γ collectivity in Se86.

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  • Received 3 February 2015
  • Revised 1 June 2015

DOI:https://doi.org/10.1103/PhysRevC.92.034305

©2015 American Physical Society

Authors & Affiliations

T. Materna1,2, W. Urban1,3, K. Sieja4, U. Köster1, H. Faust1, M. Czerwiński3, T. Rząca-Urban3, C. Bernards5, C. Fransen5, J. Jolie5, J.-M. Regis5, T. Thomas5, and N. Warr5

  • 1Institut Laue-Langevin, 71 Avenue des Martyrs, F-38042 Grenoble Cedex, France
  • 2CEA, DSM-Saclay, IRFU/SPhN, F-91191 Gif-sur-Yvette, France
  • 3Faculty of Physics, University of Warsaw, ulica Pasteura 5, PL 02-093 Warszawa, Poland
  • 4IPHC, Université de Strasbourg and CNRS, F-67037, Strasbourg, France
  • 5IKP, Universität zu Köln, Zülpicherstrasse 77, D-50937 Köln, Germany

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Vol. 92, Iss. 3 — September 2015

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