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 LutterBruce A Marsh, Peter Reiter, Michael Seidlitz, Piet Van Duppen, Didier Voulot, Nigel Warr, Frederik Wenander, Kathrin Wimmer, Kasia Wrzosek-Lipska

    Research outputpeer-review


    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
    Issue number136
    StatePublished - 30 Oct 2015

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