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Quadrupole collectivity beyond N=28: Intermediate-energy Coulomb excitation of 47,48Ar
- Source :
- Phys. Rev. Lett. 108, 182501 (2012)
- Publication Year :
- 2012
-
Abstract
- We report on the first experimental study of quadrupole collectivity in the very neutron-rich nuclei \nuc{47,48}{Ar} using intermediate-energy Coulomb excitation. These nuclei are located along the path from doubly-magic Ca to collective S and Si isotopes, a critical region of shell evolution and structural change. The deduced $B(E2)$ transition strengths are confronted with large-scale shell-model calculations in the $sdpf$ shell using the state-of-the-art SDPF-U and EPQQM effective interactions. The comparison between experiment and theory indicates that a shell-model description of Ar isotopes around N=28 remains a challenge.<br />Comment: Accepted for publication in Physical Review Letters, typos fixed in resubmission on April 10
- Subjects :
- Nuclear Experiment
Nuclear Theory
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. Lett. 108, 182501 (2012)
- Publication Type :
- Report
- Accession number :
- edsarx.1203.4630
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevLett.108.182501