Evolution of single-particle structure near the N=20 island of inversion

P. T. Macgregor, D. K. Sharp, S. J. Freeman, C. R. Hoffman, B. P. Kay, T. L. Tang, L. P. Gaffney, E. F. Baader, M. J. G. Borge, P. A. Butler, W. N. Catford, B. D. Cropper, G. De Angelis, J. Konki, Th. Kröll, M. Labiche, I. H. Lazarus, R. S. Lubna, I. Martel, D. G. McneelR. D. Page, O. Poleshchuk, R. Raabe, F. Recchia, J. Yang

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Abstract

The single-particle properties of Mg29 have been investigated via a measurement of the Mg28(d,p)Mg29 reaction, in inverse kinematics, using the ISOLDE Solenoidal Spectrometer. The negative-parity intruder states from the fp shell have been identified and used to benchmark modern shell-model calculations. The systematic data on the single-particle centroids along the N=17 isotones show good agreement with shell-model predictions in describing the observed trends from stability toward O25. However, there is also evidence that the effect of the finite geometry of the nuclear potential is playing a role on the behavior of the p orbitals near the particle-emission threshold.

Original languageEnglish
Article numberA104
JournalPhysical Review C
Volume104
Issue number5
DOIs
Publication statusPublished - 8 Nov 2021

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