تقرير
Quadrupole collectivity beyond N=28: Intermediate-energy Coulomb excitation of 47,48Ar
| العنوان: | Quadrupole collectivity beyond N=28: Intermediate-energy Coulomb excitation of 47,48Ar |
|---|---|
| المؤلفون: | Winkler, R., Gade, A., Baugher, T., Bazin, D., Brown, B. A., Glasmacher, T., Grinyer, G. F., Meharchand, R., McDaniel, S., Ratkiewicz, A., Weisshaar, D. |
| المصدر: | Phys. Rev. Lett. 108, 182501 (2012) |
| سنة النشر: | 2012 |
| المجموعة: | Nuclear Experiment Nuclear Theory |
| مصطلحات موضوعية: | Nuclear Experiment, Nuclear Theory |
| الوصف: | 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. Comment: Accepted for publication in Physical Review Letters, typos fixed in resubmission on April 10 |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.108.182501 |
| URL الوصول: | http://arxiv.org/abs/1203.4630 |
| رقم الأكسشن: | edsarx.1203.4630 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevLett.108.182501 |
|---|