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Cross-shell excited configurations in the structure of 34Si

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Miyagi,  T.       
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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引用

Lubna, R. S., Garnsworthy, A. B., Vandana, T., Ball, G. C., Natzke, C. R., Rocchini, M., Andreoiu, C., Bhattacharjee, S. S., Dillmann, I., Garcia, F. H., Gillespie, S. A., Hackman, G., Griffin, C. J., Leckenby, G., Miyagi, T., Olaizola, B., Porzio, C., Rajabali, M. M., Saito, Y., Spagnoletti, P., Tabor, S. L., Umashankar, R., Vedia, V., Volya, A., Williams, J., & Yates, D. (2024). Cross-shell excited configurations in the structure of 34Si. Physical Review C, 109(1):. doi:10.1103/PhysRevC.109.014309.


引用: https://hdl.handle.net/21.11116/0000-000E-4E56-B
要旨
The cross-shell excited states of 34Si have been investigated via β decays of the 4 ground state and the 1+ isomeric state of 34Al. Since the valence protons and valence neutrons occupy different major shells in the ground state as well as the intruder 1+ isomeric state of 34Al, intruder levels of 34Si are populated via allowed β decays. Spin assignments to such intruder levels of 34Si were established through γ−γ angular correlation analysis for the negative-parity states with dominant configurations (νd3/2)−1⊗(νf7/2)1 as well as the positive-parity states with dominant configurations (νsd)−2⊗(νf7/2p3/2)2. The configurations of such intruder states play crucial roles in our understanding of the N=20 shell gap evolution. A configuration interaction model derived from the FSU Hamiltonian was utilized in order to interpret the intruder states in 34Si. Shell model interaction derived from a more fundamental theory with the valence space in medium similarity renormalization group method was also employed to interpret the structure of 34Si.