Beta decay of 61Mn to levels in 61Fe

D. Radulov, C.J. Chiara, I.G. Darby, H. De Witte, J. Diriken, D.V. Fedorov, V.N. Fedosseev, L.M. Fraile, M. Huyse, U Koester, B.A. Marsh, D. Pauwels, Lucia Popescu, M.D. Seliverstov, A.M. Sjoedin, P. Van den Bergh, P. Van Duppen, M. Venhart, W.B. Walters, K. WimmerPaul Schuurmans

    Research outputpeer-review


    A detailed β-decay study of 61Mn is presented, yielding extended information on the level structure of 61Fe. Pure beams were obtained at ISOLDE, CERN, after selective laser ionization and mass separation of fission products from the bombardment of a UCx target by 1.4-GeV protons. The β and γ information was detected by two MiniBall clusters and three E plastic scintillators. The new 61Mn decay scheme reveals 48 γ transitions, distributed over 20 excited states. A comparison to the decay scheme of 59Mn and excited states in 59Fe is made. Shell-model calculations with two different interactions are performed in order to compare the nuclear structure of the two neighboring odd-A iron isotopes. Tentative spin and parities of several excited states in 61Fe are assigned on the basis of β-decay feeding patterns in both 59,61Fe and of results from the theoretical shell-model calculations.
    Original languageEnglish
    Pages (from-to)014307-014307
    JournalPhysical Review C
    Issue number1
    StatePublished - 10 Jul 2013

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