| Autor: |
T.J. Gray, J.M. Allmond, C. Benetti, C. Wibisono, L. Baby, A. Gargano, T. Miyagi, A.O. Macchiavelli, A.E. Stuchbery, J.L. Wood, S. Ajayi, J. Aragon, B.W. Asher, P. Barber, S. Bhattacharya, R. Boisseau, J.M. Christie, A.L. Conley, P. De Rosa, D.T. Dowling, C. Esparza, J. Gibbons, K. Hanselman, J.D. Holt, S. Lopez-Caceres, E. Lopez Saavedra, G.W. McCann, A. Morelock, B. Kelly, T.T. King, B.C. Rasco, V. Sitaraman, S.L. Tabor, E. Temanson, V. Tripathi, I. Wiedenhöver, R.B. Yadav |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Physics Letters B, Vol 855, Iss , Pp 138856- (2024) |
| Druh dokumentu: |
article |
| ISSN: |
0370-2693 |
| DOI: |
10.1016/j.physletb.2024.138856 |
| Popis: |
Single-step Coulomb excitation of 46,48,49,50Ti is presented. A complete set of E2 matrix elements for the quintuplet of states in 49Ti, centred on the 2+ core excitation, was measured for the first time. A total of nine E2 matrix elements are reported, four of which were previously unknown. 2249Ti27 shows a 20% quenching in electric quadrupole transition strength as compared to its semi-magic 2250Ti28 neighbour. This 20% quenching, while empirically unprecedented, can be explained with a remarkably simple two-state mixing model, which is also consistent with other ground-state properties such as the magnetic dipole moment and electric quadrupole moment. A connection to nucleon transfer data and the quenching of single-particle strength is also demonstrated. The simplicity of the 49Ti-50Ti pair (i.e., approximate single-j 0f7/2 valence space and isolation of yrast states from non-yrast states) provides a unique opportunity to disentangle otherwise competing effects in the ground-state properties of atomic nuclei, the emergence of collectivity, and the role of proton-neutron interactions. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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Full Text from ScienceDirect