Phys.Rev. C 93, 044303 (2016)

R.Lica, for the IDS Collaboration

Fast-timing study of the l-forbidden 1/2⁺ → 3/2⁺ M1 transition in ¹²⁹Sn

RADIOACTIVITY ^129,129mIn(β^-)[from U(p, X), E=1.4 GeV, using General Purpose Separator (GPS) at ISOLDE-CERN]; Measured Eγ, Iγ, βγ-, γγ-coin, half-life of the lowest 1/2+ state in ¹²⁹Sn by βγ(t) and centroid-shift analysis, fast-timing technique. Source was a mixture of three activities of ¹²⁹In. ¹³⁸Cs(β^-); measured Eγ, time-response for calibration in the present measurements. ¹²⁹Sn; deduced levels, J, π, B(M1), configuration. Comparison with shell-model calculations with an effective interaction from the CD-Bonn nucleon-nucleon potential.

doi: 10.1103/PhysRevC.93.044303