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Testing microscopically derived descriptions of nuclear collectivity: Coulomb excitation of 22Mg
- Publication Year :
- 2017
-
Abstract
- Many-body nuclear theory utilizing microscopic or chiral potentials has developed to the point that collectivity might be dealt with in an {\it ab initio} framework without the use of effective charges; for example with the proper evolution of operators, or alternatively, through the use of an appropriate and manageable subset of particle-hole excitations. We present a precise determination of $E2$ strength in $^{22}$Mg and its mirror $^{22}$Ne by Coulomb excitation, allowing for rigorous comparisons with theory. No-core symplectic shell-model calculations were performed and agree with the new $B(E2)$ values while in-medium similarity-renormalization-group calculations consistently underpredict the absolute strength, with the missing strength found to have both isoscalar and isovector components.<br />Comment: 7 pages, 5 figures. To be submitted to Physics Letters B
- Subjects :
- Nuclear Experiment
Subjects
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.1709.03948
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1016/j.physletb.2018.05.064