Evolution of the E(1/21+)-E(3/21+) energy spacing in odd-mass K, Cl, and P isotopes for N=20-28

A. Gade, B. A. Brown, D. Bazin, C. M. Campbell, J. A. Church, D. C. Dinca, J. Enders, T. Glasmacher, M. Horoi, Z. Hu, K. W. Kemper, W. F. Mueller, T. Otsuka, L. A. Riley, B. T. Roeder, T. Suzuki, J. R. Terry, K. L. Yurkewicz, H. Zwahlen

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Abstract

The energy of the first excited state in the neutron-rich N=28 nucleus Cl45 has been established via in-beam γ-ray spectroscopy following proton removal. This energy value completes the systematics of the E(1/21+)-E(3/21+) level spacing in odd-mass K, Cl, and P isotopes for N=20-28. The results are discussed in the framework of shell-model calculations in the sd-fp model space. The contribution of the central, spin-orbit, and tensor components is discussed from a calculation based on a proton single-hole spectrum from G-matrix and π+ρ meson exchange potentials. A composite model for the proton 0d3/2-1s1/2 single-particle energy shift is presented.

Original languageEnglish
Article number034322
JournalPhysical Review C - Nuclear Physics
Volume74
Issue number3
DOIs
StatePublished - 2006

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