Effect of Tensor Force on Proton Shell Evolution in the "SouthWest" of 132Sn: Low-Lying -emitting Isomers in 123,125Ag

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Kunibiki Messe (Matsue)

Kunibiki Messe


Poster Contribution


Dr Zhihuan Li (Peking University)


The beta-delayed gamma-ray spectroscopy of 123,125Pd are investigated at the Radioactive Isotope Beam Factory of the RIKEN Nishina Center. Neutron-rich nuclei 123,125Pd are produced by in-flight fission of the 238U beam at 345 MeV/nucleon. The 1/2− low-lying beta-emitting isomers in 123,125Ag and gamma transitions feeding into the isomers are constructed for the first time and the results are compared to large-scale shell-model calculations using the state-of-the-art EPQQM effective interaction. The effects of the monopole interaction on the proton shell evolution in the “southwest” of 132Sn are discussed in terms of Vmu interaction.

Primary author

Dr Zhihuan Li (Peking University)

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