Abstract. Sub-barrier Coulomb-excitation was performed on a mixed beam of 62 Mn and 62 Fe, following in-trap β − decay of 62 Mn 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 + , 3transition. This fixes the relative positions of the β-decaying 4 + and 1 + states in 62 Mn for the first time. Population of the 2