Low-energy Coulomb excitation of Fe-62 and Mn-62 following in-beam decay of Mn-62

  • Nele Kesteloot
  • , Liam Paul Gaffney
  • , Jorden van de Walle
  • , Beyhan Bastin
  • , Vincenz Bildstein
  • , Andrey Blazhev
  • , Nick Bree
  • , Joachim Cederkäll
  • , Iain Darby
  • , Hilde De Witte
  • , Douglas D DiJulio
  • , Jan Diriken
  • , Valentin N. Fedosseev
  • , CH Fransen
  • , R Gernhäuser
  • , Gustafsson A.
  • , H Hess
  • , Mark Huyse
  • , Thorsten Kröll
  • , Rudi Lutter
  • Bruce A Marsh, Peter Reiter, Michael Seidlitz, Piet Van Duppen, Didier Voulot, Nigel Warr, Frederik Wenander, Kathrin Wimmer, Kasia Wrzosek-Lipska

    Research outputpeer-review

    Abstract

    Sub-barrier Coulomb excitation was performed on a mixed beam of Mn-62 and Fe-62, following in-trap beta(-) decay of Mn-62 at REX-ISOLDE, CERN. The trapping and charge breeding times were varied in order to alter the composition of the beam, which was measured by means of an ionisation chamber at the zero-angle position of the Miniball array. A new transition was observed at 418 keV, which has been tentatively associated to a (2(+),3(+)) -> 1(g.s.)(+) transition. This fixes the relative positions of the beta-decaying 4(+) and 1(+) states in Mn-62 for the first time. Population of the 2 (+)(1) state was observed in Fe-62 and the cross-section determined by normalisation to the Ag-109 target excitation, confirming the B(E2) value measured in recoil-distance lifetime experiments.
    Original languageEnglish
    Number of pages10
    JournalThe European Physical Journal A
    Volume51
    Issue number136
    DOIs
    StatePublished - 30 Oct 2015

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