Study of isomer and proton decays in N ≈ Z nuclei below $^{100}$Sn

A decay spectroscopy experiment was performed within the EURICA campaign at RIKEN in 2012. It aimed at the isomer and particle spectroscopy of excited states and ground states in the mass region below the doubly magic 100Sn. The N = Z nuclei 98In, 96Cd and 94Ag were of particular interest for the present study. Preliminary results on the neutron deficient nuclei 93Ag and 94Ag are presented. In 94Ag a more precise value for the half-life of the ground state’s superallowed Fermi transition was deduced. In addition the energy spectra of the mentioned decay could be reproduced through precise Geant4 simulations of the used active stopper SIMBA. This will enable us to extract Qβ values from the measured data. The decay of 93Ag is discussed based on the observed implantation-decay correlation events.

K. Moschner , A. Blazhev , P. Boutachkov , P. Davies , R. Wadsworth , F. Ameil , H. Baba , T. Bäck , M. Dewald , P. Doornenbal , T. Faestermann , A. Gengelbach , J. Gerl , R. Gernhaeuser , S. Go , M. Górska , H. Grawe , E. Gregor , H. Hotaka , T. Isobe , D. G. Jenkins , J. Jolie , H. S. Jung , I. Kojouharov , N. Kurz , M. Lewitowicz (1) , G. Lorusso , L. Maier , E. Merchan , F. Naqvi , H. Nishibata , D. Nishimura , S. Nishimura , N. Pietralla , H. Schaffner , P.-A. Söderström , K. Steiger , T. Sumikama , J. Taprogge , P. Thöle , N. Warr , H. Watanabe , V. Werner , Z. Xu , A. Yagi , K. Yoshinaga , Y. Zhu

1 GANIL - Grand Accélérateur National d'Ions Lourds

Domaines: Physique Nucléaire Expérimentale [nucl-ex]

K. Moschner, A. Blazhev, P. Boutachkov, P. Davies, R. Wadsworth, et al.. Study of isomer and proton decays in N ≈ Z nuclei below $^{100}$Sn. Fifteenth International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics, Aug 2014, Dresden, Germany. pp.01024, ⟨10.1051/epjconf/20159301024⟩. ⟨in2p3-01077178⟩