Abstract
Sub-barrier Coulomb excitation was performed on a mixed beam of 62Mn and 62Fe, following in-trap β − decay of 62Mn 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 β-decaying 4+ and 1+ states in 62Mn for the first time. Population of the 2 +1 state was observed in 62Fe and the cross-section determined by normalisation to the 109Ag target excitation, confirming the B(E2) value measured in recoil-distance lifetime experiments.
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Gaffney, L.P., Van de Walle, J., Bastin, B. et al. Low-energy Coulomb excitation of 62Fe and 62Mn following in-beam decay of 62Mn. Eur. Phys. J. A 51, 136 (2015). https://doi.org/10.1140/epja/i2015-15136-6
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DOI: https://doi.org/10.1140/epja/i2015-15136-6