High-spin structure in $^{40}$K

Abstract : High-spin states of $^{40}$K have been populated in the fusion-evaporation reaction $^{12}$C($^{30}$Si,np)$^{40}$K and studied by means of $\gamma$-ray spectroscopy techniques using one AGATA triple cluster detector, at INFN - Laboratori Nazionali di Legnaro. Several new states with excitation energy up to 8 MeV and spin up to $10^-$ have been discovered. These new states are discussed in terms of J=3 and T=0 neutron-proton hole pairs. Shell-model calculations in a large model space have shown a good agreement with the experimental data for most of the energy levels. The evolution of the structure of this nucleus is here studied as a function of excitation energy and angular momentum.
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Submitted on : Friday, November 23, 2012 - 2:00:35 PM
Last modification on : Friday, November 23, 2012 - 2:00:35 PM

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P.-A. Söderström, L. Charles, G. Duchêne, J. Chavas, M. Karolak, et al.. High-spin structure in $^{40}$K. Physical Review C, American Physical Society, 2012, 86, pp.054320. <10.1103/PhysRevC.86.054320>. <in2p3-00756667>

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