| Autor: |
Heylen, H. De Rydt, M. Neyens, G. Bissell, M.L. Caceres, L. Chevrier, R. Daugas, J.M. Ichikawa, Y. Ishibashi, Y. Kamalou, O. Mertzimekis, T.J. Morel, P. Papuga, J. Poves, A. Rajabali, M.M. Stödel, C. Thomas, J.C. Ueno, H. Utsuno, Y. Yoshida, N. Yoshimi, A. |
| Jazyk: |
angličtina |
| Rok vydání: |
2016 |
| Předmět: |
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| Popis: |
The electric quadrupole moment of the Al201333 ground state, located at the border of the island of inversion, was obtained using continuous-beam β-detected nuclear quadrupole resonance (β-NQR). From the measured quadrupole coupling constant νQ=2.31(4) MHz in an α-Al2O3 crystal, a precise value for the electric quadrupole moment is extracted: QsAl33=141(3) mb. A comparison with large-scale shell model calculations shows that Al33 has at least 50% intruder configurations in the ground state wave function, favoring the excitation of two neutrons across the N=20 shell gap. Al33 therefore clearly marks the gradual transition north of the deformed Na and Mg nuclei towards the normal Z≥14 isotopes. © 2016 American Physical Society. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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