| Autor: |
Lubna, R. S., Garnsworthy, A. B., Tripathi, Vandana, 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. |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Phys. Rev. C 109, 014309 (2024) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevC.109.014309 |
| Popis: |
The cross-shell excited states of $^{34}$Si have been investigated via $\beta$-decays of the $4^-$ ground state and the $1^+$ isomeric state of $^{34}$Al. Since the valence protons and valence neutrons occupy different major shells in the ground state as well as the intruder $1^+$ isomeric state of $^{34}$Al, intruder levels of $^{34}$Si are populated via allowed $\beta$ decays. Spin assignments to such intruder levels of $^{34}$Si were established through $\gamma$-$\gamma$ angular correlation analysis for the negative parity states with dominant configurations $(\nu d_{3/2})^{-1} \otimes (\nu f_{7/2})^{1}$ as well as the positive parity states with dominant configurations $(\nu sd)^{-2} \otimes (\nu f_{7/2}p_{3/2})^2$. 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 $^{34}$Si. Shell model interaction derived from a more fundamental theory with the Valence Space In Medium Similarity Renormalization Group (VS-IMSRG) method was also employed to interpret the structure of $^{34}$Si. |
| Databáze: |
arXiv |
| Externí odkaz: |
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