Decay Spectroscopy of $^{129}$Cd

• Main Authors: Saito, Y, Dillmann, I, Krücken, R, Bernier, N, Ball, G. C, Bowry, M, Andreoiu, C, Bidaman, H, Bildstein, V, Boubel, P, Burbadge, C, Caballero-Folch, R, Dunlop, M. R, Dunlop, R, Evitts, L. J, Garcia, F. H, Garnsworthy, A. B, Garrett, P. E, Grawe, H, Hackman, G, Hallam, S, Henderson, J, Ilyushkin, S, Jungclaus, A, Kisliuk, D, Lassen, J, Li, R, MacConnachie, E, MacLean, A. D, McGee, E, Moukaddam, M, Olaizola, B, Padilla-Rodal, E, Park, J, Paetkau, O, Petrache, C. M, Pore, J. L, Radich, A. J, Ruotsalainen, P, Smallcombe, J, Smith, J. K, Svensson, C. E, Teigelhöfer, A, Turko, J, Zidar, T
• Format: Journal Article
• Language: English
• Published: 07-08-2020
• Subjects: Physics - Nuclear Experiment; Physics - Nuclear Theory
• DOI: 10.48550/arxiv.2008.02959

Phys. Rev. C 102, 024337 (2020) Excited states of $^{129}$In populated following the $\beta$-decay of
$^{129}$Cd were experimentally studied with the GRIFFIN spectrometer at the
ISAC facility of TRIUMF, Canada. A 480-MeV proton beam was impinged on a
uranium carbide target and $^{129}$Cd was extracted using the Ion Guide Laser
Ion Source (IG-LIS). $\beta$- and $\gamma$-rays following the decay of
$^{129}$Cd were detected with the GRIFFIN spectrometer comprising the plastic
scintillator SCEPTAR and 16 high-purity germanium (HPGe) clover-type detectors.
%, along with the $\beta$-particles were detected with SCEPTAR. From the
$\beta$-$\gamma$-$\gamma$ coincidence analysis, 32 new transitions and 7 new
excited states were established, expanding the previously known level scheme of
$^{129}$In. The $\log ft$ values deduced from the $\beta$-feeding intensities
suggest that some of the high-lying states were populated by the $\nu 0 g_{7/2}
\rightarrow \pi 0 g_{9/2}$ allowed Gamow-Teller (GT) transition, which
indicates that the allowed GT transition is more dominant in the $^{129}$Cd
decay than previously reported. Observation of fragmented Gamow-Teller
strengths is consistent with theoretical calculations.